Fraunhofer Institute for Industrial Mathematics ITWM Hall 7 / L32

Exhibitor Profile

Das Fraunhofer ITWM besitzt langjährige Erfahrung in der Modellierung und Simulation von Filtrations- und Separationsprozessen.

Das Anwendungsspektrum der Simulationstools und –dienstleistungen umfasst die Optimierung von Filtermedien und –elementen (u.a. Effizienz, Standzeit), von Feldflussfraktionierungsprozessen sowie die rechnergestützte Untersuchung von reaktiven Strömungen in porösen Medien. In Verbindung mit Simulationen der Herstellung von Filtermedien (z.B. Meltblown-Prozess) kann die gesamte Prozesskette von der Faser bis zum Filter rechnergestützt optimiert werden. Hierdurch lässt sich die Anzahl der zeit- und kostenaufwändigen Tests an Prototypen reduzieren und gleichzeitig können Produktivität und Qualität erhöht werden.

Fraunhofer ITWM has years of experience in the modelling and simulation of filtration, separation and purification processes.

The software solutions and simulation services include the optimization of filter media and elements (efficiency, lifetime), field flow fractionation in microfluidics and the prediction of reactive flow in porous media. Combined with modeling and simulation of the media manufacturing (e.g. meltblown process), a computer-aided optimization for the entire chain from fiber to filter is available. The number of time-consuming and costly tests with prototypes can be significantly reduced while both productivity and quality can be increased.

Products / Markets

Product Index

  • Absorptionsfilter
  • Automobilfilter
  • Filterelemente
  • Filtergehäuse
  • Filtermedien
  • Filterpatronen
  • Kraftstoff-Filter
  • Luftfilter
  • Medizinische Filter
  • Membranen
  • Simulation
  • Synthetische Fasern
  • Technische Textilien
  • Ultrafiltration
  • Umkehrosmose
  • Vliesmaterialien
  • Wasserfilter
  • Ölfilter

Market Scope

  • Abwasserwirtschaft
  • Automobilindustrie
  • Chemische Industrie
  • Farben-, Pigment-, Beschichtungsindustrie
  • Filtrations- und Separationsindustrie
  • Kunststoffverarbeitende Industrie
  • Lebensmittel-,Getränkeindustrie
  • Pharmazeutische Industrie
  • Textilindustrie
  • Zellstoff-, Papierindustrie

Product Index

  • Absorption Filters
  • Air Filters
  • Automotive Filters
  • Filter Cartridges
  • Filter Elements
  • Filter Housings
  • Filter Media
  • Fuel Filters
  • Medical Filters
  • Membranes
  • Nonwovens
  • Oil Filters
  • Reverse Osmosis
  • Simulation
  • Synthetic Fibres
  • Technical Textiles
  • Ultrafiltration
  • Water Filters

Market Scope

  • Automotive Industry
  • Chemical Industries
  • Filtration and Separation Industry
  • Food, Beverage Industry
  • Paint, Pigments, Coatings Industry
  • Pharmaceutical Industry
  • Plastic Industry
  • Pulp, Paper Industry
  • Textile Industry
  • Waste Water Treatment

Product Index

  • 医用过滤器
  • 反渗透
  • 合成纤维
  • 吸附式过滤器
  • 工业用纺织品
  • 无纺布
  • 模拟
  • 水过滤器
  • 汽车过滤器
  • 滤壳
  • 滤油器
  • 滤筒
  • 滤芯
  • 燃油过滤器
  • 空气过滤器
  • 超过滤
  • 过滤介质
  • 隔膜

Market Scope

  •  汽车工业
  • 制药工业
  • 化学工业
  • 塑料工业
  • 废水处理
  • 油漆、颜料、涂料工业
  • 纸浆、造纸工业
  • 纺织工业
  • 过滤与分离工业
  • 食品、饮料工业

Product Index

  • أقمشة تقنية
  • اسطوانات
  • الألياف الاصطناعية وسائل الإعلام
  • الفلترة المضاعفة
  • النضح العكسي
  • تصفية العلب
  • خراطيش فلتر
  • غير المنسوجات / اللانسيج
  • فلاتر إمتصاص
  • فلاتر السيارات
  • فلاتر الهواء
  • فلاتر زيوت
  • فلاتر طبية
  • فلاتر ماء
  • قطع فلاتر
  • محاكاة
  • مواد فلاتر المحروقات
  • مواد فلترة

Market Scope

  • الصناعات الدوائية
  • الصناعات الغذائية وصناعة المشروبات
  • الصناعة الكيماوية
  • الصناعة النسيجية
  • الصناعة الورقية
  • صناعات الفلترة وفصل المواد
  • صناعة البلاستيك
  • صناعة الدهانات والصبغات والتلبيس
  • صناعة السيارات
  • معالجة مياه الصرف

Product Index

  • Cartouches de filtres
  • Eléments de filtre
  • Fibres Synthétiques
  • Filtres automobiles
  • Filtres médicaux
  • Filtres à absorption
  • Filtres à air
  • Filtres à carburant
  • Filtres à eau
  • Filtres à huile
  • Les boîtiers de filtre
  • Membranes
  • Médias de filtre
  • Non tissés
  • Osmose inversée
  • Simulation
  • Textiles techniques
  • Ultrafiltration

Market Scope

  • Industrie automobile
  • Industrie chimique
  • Industrie de filtration et de séparation
  • Industrie de la pâte de cellulose et du papier
  • Industrie de peintures, pigments et revêtements
  • Industrie des matières synthétiques
  • Industrie pharmaceutique
  • Industrie textile
  • Industries alimentaires et des boissons
  • Traitement des eaux usées

Product Index

  • Alloggiamenti filtro
  • Cartucce filtri
  • Elementi filtranti
  • Fibra sintetica
  • Filtri aria
  • Filtri carburante
  • Filtri di assorbimento
  • Filtri medicali
  • Filtri olio
  • Filtri per acqua
  • Filtri settore automobilistico
  • Membrane
  • Mezzi filtranti
  • Non tessuti
  • Osmosi inversa
  • Simulazione
  • Tessuti tecnici
  • Ultrafiltrazione

Market Scope

  • Settore alimenti e bevande
  • Settore automobilistico
  • Settore chimico
  • Settore filtrazione e separazione
  • Settore industria dell carta e della cellulosa
  • Settore industria tessile
  • Settore parafarmaceutico
  • Settore pitture, pigmenti e rivestimenti
  • Settore plastica
  • Trattamento acque reflue

Product Index

  • Elementy filtra
  • Filtry absorbcyjne
  • Filtry do wody pitnej
  • Filtry do zastosowań medycznych
  • Filtry oleju
  • Filtry paliwa
  • Filtry powietrza
  • Filtry samochodowe
  • Materiały nietkane
  • Media filtrów
  • Membrany
  • Obudowy filtrów
  • Odwrócona osmoza
  • Symulacja
  • Tekstylia techniczne
  • Ultrafiltracja
  • Wkłady filtra
  • Włókno syntetyczne

Market Scope

  • Filtrowanie i separacja
  • Oczyszczanie ścieków (waste water)
  • Produkcja farb i lakierów
  • Przemysł celulozowo-papierniczy
  • Przemysł chemiczny
  • Przemysł farmaceutyczny
  • Przemysł samochodowy
  • Przemysł spożywczy
  • Przemysł tekstylny
  • Przemysł tworzyw sztucznych

Product Index

  • Carcaças de Filtro
  • Cartuchos filtrantes
  • Elementos filtrantes
  • Fibres Synthétiques
  • Filtros de absorção
  • Filtros de ar
  • Filtros de combustível
  • Filtros de água
  • Filtros de óleo
  • Filtros medicinais
  • Filtros para automóveis
  • Meios de filtragem
  • Membranas
  • Não-tecidos
  • Osmose inversa
  • Simulação
  • Têxteis para usos técnicos
  • Ultrafiltração

Market Scope

  • Indústria alimentar, de bebidas
  • Indústria automóvel
  • Indústria de filtragem e separação
  • Indústria dos plásticos
  • Indústria farmacêutica
  • Indústria têxtil
  • Indústrias químicas
  • Pasta, indústria do papel
  • Pintura, pigmentos, indústria de revestimentos
  • Tratamento de água de despejo

Product Index

  • Абсорбционный фильтр
  • Автомеханические фильтры
  • Водяные фильтры
  • Воздушные фильтры
  • Имитация
  • Корпуса фильтров
  • Масляные фильтры
  • Медицинские фильтры
  • Мембраны
  • Нетканые материалы
  • Обратный осмос
  • Синтетические волокна
  • Технический текстиль
  • Топливные фильтры
  • Ультрафильтрация
  • Фильтрующие патроны
  • Фильтрующие элементы
  • Фильтрующий материал

Market Scope

  • Автомобильная промышленность
  • Бумажная промышленность
  • Лакокрасочная промышленность
  • Отрасль фильтрации и сепарирования
  • Очистка сточных вод
  • Производство пластмасс
  • Производство продуктов питания и напитков
  • Текстильная промышленность
  • Фармацевтическая промышленность
  • Химическая промышленность

Product Index

  • Cartuchos de filtro
  • Elementos de filtro
  • Fibra Sintética
  • Filtro de Viviendas
  • Filtros de absorción
  • Filtros de aceite
  • Filtros de agua
  • Filtros de aire
  • Filtros de automoción
  • Filtros de combustible
  • Filtros médicos
  • Medios de filtro
  • Membranas
  • Non-Wowens
  • Osmosis inversa
  • Simulación
  • Tejidos técnicos
  • Ultrafiltración

Market Scope

  • Industria de la alimentación y las bebidas
  • Industria de la automoción
  • Industria de la filtración y la separación
  • Industria de la pasta de madera, el papel
  • Industria de las pinturas, pigmentos, revestimientos
  • Industria de los plásticos
  • Industria farmacéutica
  • Industria textil
  • Industrias químicas
  • Tratamiento de aguas residuales

Product Index

  • Absorpsiyon Filtreleri
  • Dokunmamış Mamuller
  • Filtre Elemanları
  • Filtre Gövdeleri
  • Filtre Kartuşları
  • Filtre Ortamı
  • Hava Filtreleri
  • Membranlar
  • Otomobil Filtreleri
  • Sentetik Elyaf
  • Simülasyon
  • Su Filtreleri
  • Teknik Tekstiller
  • Ters Ozmos
  • Tıbbi Filtreler
  • Ultrafiltrasyon
  • Yakıt Filtreleri
  • Yağ Filtreleri

Market Scope

  • Atıksu Arıtma
  • Boya, Pigment, Kaplama Endüstrisi
  • Filtrasyon ve Ayırma Endüstrisi
  • Gıda, İçecek Endüstrisi
  • Kimya Endüstrisi
  • Otomotiv Endüstrisi
  • Plastik Endüstrisi
  • Selüloz, Kağıt Endüstrisi
  • Tekstil Endüstrisi
  • İlaç Endüstrisi

Product Index

  • 공기 필터
  • 기능성 섬유
  • 물 필터
  • 부직포
  • 분리막
  • 시뮬레이션
  • 여과재
  • 역삼투
  • 연료 필터
  • 오일 필터
  • 의료 필터
  • 자동차 필터
  • 필터 엘리먼트
  • 필터 카트리지
  • 필터 하우징
  • 한외 여과
  • 합성섬유
  • 흡수 필터

Market Scope

  • 섬유 산업
  • 식음료 산업
  • 여과 및 분리 산업
  • 자동차 산업
  • 제약 산업
  • 제지, 종이 산업
  • 페인트, 안료, 도장 산업
  • 폐수 처리
  • 플라스틱 산업
  • 화학 산업

Product Index

  • エアフィルター
  • オイルフィルター
  • シミュレーション
  • テクニカル繊維
  • フィルターエレメント
  • フィルターカートリッジ
  • フィルターハウジング
  • フィルターメディア
  • 不織布
  • 医療用フィルター
  • 合成繊維
  • 吸収フィルター
  • 水フィルター
  • 燃料フィルター
  • 自動車用フィルター
  • 逆浸透
  • 限外濾過

Market Scope

  • パルプ、製紙業界
  • プラスチック業界
  • 化学工業
  • 医薬品業界
  • 塗料、顔料、コーティング産業
  • 汚水処理
  • 濾過および分離技術工業
  • 繊維業界
  • 自動車産業
  • 食品、飲料業界

Press release

Softwaretools und Dienstleistungen für die Filtration

Das Fraunhofer ITWM besitzt langjährige Erfahrung in der Modellierung und Simulation von Filtrations- und Separationsprozessen. Das Anwendungsspektrum der Simulationstools und -dienstleistungen umfasst die Optimierung von Filtermedien und -elementen (u.a. Effizienz, Standzeit), von Feldflussfraktionierungsprozessen sowie die rechnergestützte Untersuchung von reaktiven Strömungen in porösen Medien. In Verbindung mit Simulationen der Herstellung von Filtermedien (z.B. Meltblown-Prozess) kann die gesamte Prozesskette von der Faser bis zum Filter rechnergestützt optimiert werden. Hierdurch lässt sich die Anzahl der zeit- und kostenaufwändigen Tests an Prototypen reduzieren und gleichzeitig können Produktivität und Qualität erhöht werden.

Software Tools and Services for Filtration

Fraunhofer ITWM has years of experience in the modelling and simulation of filtration, separation and purification processes. The software solutions and simulation services include the optimization of filter media and elements (efficiency, lifetime), field flow fractionation in microfluidics and the prediction of reactive flow in porous media. Combined with modeling and simulation of the media manufacturing (e.g. meltblown process), a computer-aided optimization for the entire chain from fiber to filter is available. The number of time-consuming and costly tests with prototypes can be significantly reduced while both productivity and quality can be increased.

Conference Presentation/s

Efficient simulation of flow-induced deformation of woven filter media

M. Krier*, R. Kirsch, C. Mercier, J. Orlik, S. Rief, K. Steiner, Fraunhofer Institute for Industrial Mathematics (ITWM), Germany

Conference Session: F05 - Media Deformation - Modelling and Simulation - 2023-02-16 - 10:45

In more and more areas of filtration, the flow-induced deformation of filter media is a phenomenon that has to be taken into account when optimizing the design of filter elements. Computer simulations can accelerate the development and optimization, but since most state-of-the-art simulation models for the flow in filter elements assume rigid media, the computed results can differ a lot from experiments. A common problem in the modelling of woven filters is the huge ratio of length scales due to the comparatively large bulk fluid domains and the thin filter media with complex microstructure. Direct numerical simulation with the fibres resolved in the computational grid require a tremendous amount of hardware resources, if practical at all. For nonwoven filter media, the classical Taber model for poroelastic plates can be used for the efficient numerical simulation of Fluid-Porous-Structure-Interaction (FPSI) (see e.g. [1]).

By design, woven filters feature a periodic structure on the microscopic scale, and it seems straightforward to use this fact for the replacement of the resolved microstructure by an effective, 2D poroelastic plate or shell, such that the computational effort reduces drastically. In the presented work, an asymptotically based efficient model for the interaction of stationary laminar incompressible flow with deformable woven filters is derived. In contrast to nonwovens, the mechanical properties of the woven medium can be computed and therefore, time-consuming and extensive testing is not necessary...


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Flow-induced deformation of nonwoven filter media: Experiments, modeling and simulation

R. Kirsch, J. Köbler, N. Henkelmann, Fraunhofer Institute for Industrial Mathematics (ITWM); S. Antonyuk, V. Puderbach*, M. Weirich, University of Kaiserslautern-Landau, Germany

Conference Session: F05 - Media Deformation - Modelling and Simulation - 2023-02-16 - 10:45

During operation of filter elements, it is observed that the fluid flow causes deformations of the filter media which can lead to well-known (and undesired) effects like pleat collapse, pleat crowding etc. In such cases, filter designers are facing the additional challenge to provide stabilizing countermeasures such as spacers, supporting ribs and pleat holders without sacrificing too much available media surface area.

Finding a good design by building and testing prototypes can become very costly, so it seems natural to use computer simulations to optimize countermeasures like those mentioned above. However, most simulation models assume “rigid” filter materials. Therefore, suitable models and simulation methods for the Fluid-Porous-Structure Interaction (FPSI) are desired to obtain more realistic predictions of the filter media deformation for a given design variant. This requires a better understanding of the mechanical properties of nonwoven filter media. More precisely, the material laws governing their behaviour when subjected to volumetric forces need to be known. The question arises whether the material characterization based on “dry” experiments such as the usual tensile, bending and compression tests are sufficient for the prediction of the deformation when the fluid flows through the porous.

To investigate this, several media used in liquid filtration were characterized in terms of air permeability and structural mechanics. For the in-situ measurement of the deformation caused by stationary, laminar flow, a suitable test bench was designed and built. The test bench setup and first data obtained for flat sheet samples were...


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Influence of material compression on the mechanical and electrostatic capturing efficiency of filter media

C. Mercier*, R. Kirsch, S. Osterroth, S. Rief, Fraunhofer Institute for Industrial Mathematics (ITWM); S. Antonyuk, M. Kerner, University of Kaiserslautern-Landau, Germany

Conference Session: G03 - Air Filtration - 2023-02-14 - 16:45

One of the main design goals for filter media is a high separation performance while pressure drop is low. During manufacturing processes such as pleating filter media or during operation, the nonwoven material is compacted locally which is of importance for the mentioned quality characteristics, because the compaction leads to a local variation of the fiber volume fraction and therefore, to a non-uniform distribution of flow resistance and filtration performance.

In this work, the influence of compression on the performance of flat filter media is examined both for “classical” materials using mechanical deposition and electret media. Two different fibrous media made of polypropylene (PP, see Figure 1) investigated whereby one is electrically charged. After the characterization of both media by the thickness, basis weight and airflow for a given pressure drop, properties like the solid volume fraction and flow resistivity can be deduced...


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Multiscale modelling and simulation of coolant particle filters and ion exchangers in electric mobility

R. Kirsch, S. Osterroth*, Fraunhofer Institute for Industrial Mathematics (ITWM), Germany

Conference Session: L13 - Digitalization of Separation Processes - 2023-02-16 - 13:00

For both fuel cells and battery systems, the components of the cooling system are essential to maintain an economic usage and to ensure the desired lifetime of propulsion technologies in electric mobility. For this purpose, mostly a water-glycol mixture is used. Due to the huge amount of heat generated by those devices, a high flow rate inside the cooling loop is required. However, also the coolant has to satisfy several requirements:

  • The electrical conductivity of the coolant has to be kept low to avoid electrical shorts. Different parts of the coolant loop such as the pump, the fittings or heat exchangers can slowly release ions into the coolant [1, 2]. Possible mechanisms for the release might be leaching, degradation, or corrosion [3].
  • Contaminants in the coolant can disturb the cooling process itself (e.g. blocking of channels in the heat exchanger) and, as in other filtration processes, increase the pressure drop. Due to a decreased cooling power, this might lead to an increase in temperature and thus to a reduction of the lifetime and performance of the fuel cell or battery systems [2].

For the removal of ions, mostly a resin consisting of microporous spherical beads is considered. Since both anions and cations might be present, a mixed or layered configuration of specific resins for anions and cations is used. The release of ions is greatest at the beginning of the process and usually decreases with time [2]. Moreover, the concentration of ions depends on viscosity (temperature) [1]. Therefore, the resin should ensure a specific capacity. Nevertheless, the resin can be exhausted over time and it is important to replace the ion exchanger before the electrical conductivity of the coolant exceeds a given limit. Furthermore, the pressure drop caused by this component of the cooling loop should be as low as possible.

The coolant particle filter medium should allow for a high flow rate with a low pressure drop. Therefore, woven media (screen meshes) are well suited, since they provide a sharp cut-off diameter to ensure that particles bigger than a given diameter cannot enter the cooling channels [2]. By an increase of the weave area, the pressure drop can be decreased.

In this work, models and simulations for different components of the cooling system are presented. The resin of the ion exchanger is modelled using a multiscale approach...


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