Investigation of the porous drag and permeability at the porous-fluid interface: Influence of the filtering parameters on Darcy closure

作     者：Wojciech Sadowski Francesca di Mare Wojciech Sadowski;Francesca di Mare

作者机构：Chair of Thermal Turbomachines and AeroenginesDepartment of Mechanical EngineeringRuhr University BochumUniversitatsstr.15044801Germany 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2023年第78卷第7期

页      面：122-135页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：support from the Deutsche Forschungsgemeinschaft (DFG) 

主　　题：Porous-fluid interface Explicit filtering Permeability Porous drag 

摘      要：The porous-fluid interface encompasses a region bridging the flow inside a porous medium and a free-flowing *** the context of volume-averaged simulations,it can be described by a set of gradually changing parameters defining the porous medium,mainly porosity and *** this paper,both the permeability and the porous-induced drag force are evaluated a-priori,by explicitly filtering a set of Particle-Resolved Simulations(PRS)of the flow in the channel partially occupied by the porous *** porous matrices are considered and the influence of the geometry and filtering parameters on the macroscopic quantities is ***,the focus is placed on the requirements for the kernel type and size to perform filtering accurately,and their impact on the distribution of permeability at the *** performance of the typically used models for the permeability is compared to the explicitly filtered ***,a new model for permeability and the drag force is introduced,taking into account the information about the fltering size and non-uniformity of the velocity *** model greatly improves the prediction of velocity at the porous-fluid interface and serves as a proof of concept that a successful porous drag model should strive to include information about both parameters.