Ory Haimovich

8 Questions 6 Answers 0 Followers

Questions related from Ory Haimovich

How to treat scalar transport equation with AUSM type scheme?

It is possible to treat scalar transport equations in the form of \phi_t + u \phi_x = 0 or for the advection of Rans turbulence variables with HLLC solver. How should one employ AUSM type solver...

07 August 2017 9,816 9 View

Why is it common to treat multiphase flow as incompressible?

Hi, It is known that the speed of sound in the mixture region between two phases is lower than the speed of sound of each phase. Therefore, is it still justified to use incompressible formulation...

23 May 2017 6,058 6 View

Anyone familiar with high-order positivity preserving limiter?

Following the article "On positivity-preserving high order discontinuous Galerkin schemes for compressible Euler equations on rectangular meshes" of Zhang and Shu, JCP 2010. They claim that: "It...

27 April 2016 1,243 1 View

Are there any novel research fields of Black Scholes Model ?

Hi, Is there any demand to implement high-order numerical schemes to Black Scholes model for option pricing? I saw some papers regarding this issue but it's not really clear wheather there is...

13 October 2015 6,624 2 View

Why WENO scheme is not TVD?

Anybody can explain why WENO scheme is not considered to be TVD. Is there any implication of this fact on reconstruction data having large gradients ? What about MPWENO, is this method abstain...

05 October 2015 8,834 1 View

Any advice on the local characteristic WENO reconstruction?

Hi, I want to implement WENO reconstruction on characteristic variables. Therefore, the following transformation between primitve and characteristic variables has to be defined: W= P-1 V where W...

26 September 2015 8,412 2 View

Can I combine LES modeling with AMR for large eddy simulation in turbulent flows?

Hi, Can I devise a refinement criteria for AMR (Adaptive Mesh Refinement) in such a way it satisfies implicit LES requirements? What are the requirements for ILES exactly? Or is it possible to...

16 July 2015 1,802 6 View

What is better between HLL and HLLC ?

Hi, Regarding compressible flow with shock waves: (for example shock-bubble interaction) 1. Why HLL is more dissipative than HLLC? 2. What is better to implement? First-order HLLC or second-order...

13 April 2015 8,341 5 View