Recent content by alifar

Thanks for your reply, Actually, a peristaltic pump makes that pressure.

Hi Guys, I am designing a diaphragm pump and I want to calculate stroke volume of a diaphragm pump regarding pressure,I need to have stroke volume for each pressure to calculate pump flow rates. Under diaphragm(rectangular shape)I have a pressure fluid and this fluid pushes the diaphragm up, I...

Hi, I am researching on cross flow filtration and the fluid is non Newtonian(Blood)and flow is pulstile too. I have a few questions: 1- For membrane, I am sure that Darcy's Eq. works but I am not sure about feeding line, with considering of pilsatile flow, Can I use Navier stokes formula for...

Hi, I am researching on cross flow filtration and the fluid is non Newtonian(Blood)and flow is pulstile too. I have a few questions: 1- For membrane, I am sure that Darcy's Eq. works but I am not sure about feeding line, with considering of pilsatile flow, Can I use Navier stokes formula for...

Hi, I need to have a titanium membrane or titanium dioxide to filter bio fluids, pore size should be less than 1 micron and thickness less than 1mm or even half mm,actually I could not find any manufacturer for this filter in internet. If anybody has more information about manufacturers, please...

Hi, I need to have a titanium membrane or titanium dioxide to filter bio fluids, pore size should be less than 1 micron and thickness less than 1mm or even half mm,actually I could not find any manufacturer for this filter in internet. If anybody has more information about manufacturers, please...

Hi, I am looking for a method about delay device in fluid system, the fluid is incompressible. I have oscillatory flow and this flow will be divided to two flow by Y joint, I want to have a delay for one of this pipes, I thought that we can put a chamber for delay but I realized that after...

Hi Actually I want to simulate blood flow in renal arteries,I have looked to blood flow articles and most of them they consider blood flow as a steady flow and fully developed flow without any pulsation formula,although some of them considered pulsation flow but formulas are different. I got...

Hi Rob, Thanks for your comment and links, that pdf file was interesting, yes in aorta we can consider 100 Torr(mmHg), you know I want to put velocity as a B.C.for entrance and zero pressure for out let to simulate pressure drop,unfortunately most of researchers and designers consider blood...

Hi, Yes, Angular velocity. it comes from omega( angular frequency of blood flow).

Hi, I want to simulate blood flow with Finite element software and want to put velocity as boundary condition in inlet, for pulsation blood flow I need to have velocity function and it should be related to time, angular velocity of blood and so on, actually I could not find that, anybody knows...

Hi, I want to simulate blood flow with Finite element software and want to put velocity as boundary condition in inlet, for pulsation flow I need to have velocity function and it should be related to time, angular velocity of blood and so on, actually I could not find that, anybody knows that...

Hi, I want to simulate cake removing or cake detachment by FEA softwares like ANSYS or COMSOL but I do not have any idea about cake part to simulate. My problems are: 1- How can I show adhesion between cake and filter surface for software? 2- which structure(element) is useful for cake layer...

Hi, I want to simulate cake removing or cake detachment by FEA softwares like ANSYS or COMSOL but I do not have any idea about cake part to simulate. My problems are: 1- How can I show adhesion between cake and filter surface for software? 2- which structure(element) is useful for cake layer...

Hi, I want to simulate cake removing or cake detachment by FEA softwares like ANSYS or COMSOL but I do not have any idea about cake part to simulate. My problems are: 1- How can I show adhesion between cake and filter surface for software? 2- which structure(element) is useful for cake layer...