Ali Minaeian

5 Questions 16 Answers 0 Followers

Questions related from Ali Minaeian

What is overpressure in explosion papers?

Hi all, I have seen the "overpressure" concept in many papers, such as "Computer simulation of shock waves transmission in obstructed terrains", by Spyros Sklavounos, Fotis Rigas in which...

06 June 2019 5,638 4 View

Metal melts: Newtonian or non-Newtonian??

Hi all. Are metal melts considered Newtonian or non-Newtonian? If they are non-Newtonian, do you know which kind of non-Newtonian fluid they are? I know that we can do water modeling for some...

02 February 2018 3,444 5 View

Stress Work & Viscous Dissipation

Hi all, I have read many papers in which use two different formulas for Viscous Dissipation: tau : grad(U) tau : D [ D = 0.5* ( grad(U) + transpose(grad(U)) ) ] Which one is...

01 January 1970 848 2 View

Calculation of Gradient of a Tensor (Stress) in Cylindrical Coordinates in openFoam

Hi all, I need to calculate d/dr(tau_rt) , d/dt(tau_tt) where tau is stress tensor that is a volSymmTensorField and r , t are polar coordinates components. I have two problem: 1- Foam...

01 January 1970 8,550 0 View

Dominant mechanism of heat transfer, conduction or convection

Hi, Is there any criterion (e.g. a non-dimension number) to find out which heat transfer mechanism is dominant in a phenomenon? I've solved a heat transfer problem and now I want to know which...

01 January 1970 10,045 18 View