Kirill Tsiberkin

8 Questions 26 Answers 0 Followers

Questions related from Kirill Tsiberkin

What is the low temperature limit of modern calorimeters? How the specific heat measurements are realized near 0.1 K?

I'm searching the description of specific heat measurement technique below 1K.

07 July 2016 5,691 4 View

Are there any theoretical or experimental data about the low-temperature specific heat of paramagnetic solids with dipolar (not exchange) interaction?

The Schottky anomaly is well-studied, but it exists in ideal systems without interactions. What is the dependence of specific heat on temperature, if the spin-spin interaction is significant? I've...

03 March 2016 9,852 2 View

Can anybody point to the experimental studies of instability of flow over a saturated porous medium or flow in channel with porous walls?

There are a lot of theoretical models, and it is necessary to verify them.

03 March 2015 498 3 View

Is there any way to effectively calculate the confluent Heun function?

I need to make a relatively quick calculation of confluent Heun function (It is HeunC in Maplesoft Maple notation) values with different parameters in different points. I understand that it is...

06 June 2014 5,588 7 View

Are there any studies of fluid flow stability over the pure Darcy porous medium?

There are many publications about the flow stability over the Darcy-Brinkman medium with nice and clear results. e.g. Chang M. H., Chen F., Straughan B. "Instability of Poiseuille ﬂow in a ﬂuid...

05 May 2014 9,886 2 View

Can the gradient of granular admixture volume fraction be included in user-defined function in ANSYS Fluent?

I need to make a UDF containing follow source term: Q = A(C) / (1 - C) * dC/dz, where C is volume fraction of granular admixture (e.g., sand or clay) and A is some nonlinear function. Is there any...

01 January 2014 1,954 3 View

What is the correct boundary condition at an impermeable wall for porous media flow?

The most common condition I have seen is vanishing of normal component of fluid velocity at the wall. It makes sense, because Darcy's law describes pore-averaged flow, and the fluid moves even...

12 December 2013 6,485 6 View

Is it possible to apply the Beavers-Joseph condition with the Brinkman model?

I study the liquid flow above porous medium layer is saturated with the same liquid. The liquid is viscous, and I use the Brinkman model as main with boundary conditions for viscous stresses is...

12 December 2013 5,405 12 View