CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Wiki > Fromm based Schemes - structured grids

Fromm based Schemes - structured grids

From CFD-Wiki

(Difference between revisions)
Jump to: navigation, search
(→Fromm scheme)
 
(2 intermediate revisions not shown)
Line 6: Line 6:
J. Comp. Phys., Vol. 3, p.176, (1968)
J. Comp. Phys., Vol. 3, p.176, (1968)
 +
 +
[[Image:NM_convectionschemes_struct_grids_Schemes_FROMM_Probe_01.jpg]]
=== MUSCL - Monotonic Upwind Scheme for Conservation Laws ===
=== MUSCL - Monotonic Upwind Scheme for Conservation Laws ===
Line 13: Line 15:
Based on Fromm's scheme
Based on Fromm's scheme
-
[[Image:NM_convectionschemes_struct_grids_Schemes_MUSCL_Probe_01.jpg]]
+
-
 
+
-
 
+
Normalized variables - uniform grids
Normalized variables - uniform grids
Line 81: Line 81:
In C. Taylor and P.Durbetaki, editors, Proc. Ninth Int. Conf. on Numer. Method. Laminar and turbulent Flow, pages 203-214, Pineride Press, Swansea, 1995
In C. Taylor and P.Durbetaki, editors, Proc. Ninth Int. Conf. on Numer. Method. Laminar and turbulent Flow, pages 203-214, Pineride Press, Swansea, 1995
 +
 +
---------------------------------------------------------------------
 +
----
 +
<i> Return to [[Numerical methods | Numerical Methods]] </i>
 +
 +
<i> Return to [[Approximation Schemes for convective term - structured grids]] </i>

Latest revision as of 21:17, 10 December 2010

Contents

Fromm scheme

J.E.Fromm

A method for reducing dispersion in convective difference schemes

J. Comp. Phys., Vol. 3, p.176, (1968)

NM convectionschemes struct grids Schemes FROMM Probe 01.jpg

MUSCL - Monotonic Upwind Scheme for Conservation Laws

Lien F.S. and Leschziner M.A. , Proc. 5th Int. IAHR Symp. on Refind Flow Modelling and Turbulence Measurements, Paris, Sept. 1993

Based on Fromm's scheme


Normalized variables - uniform grids

\hat{\phi_{f}}= \begin{cases} 2 \hat{\phi_{C}} & 0 \leq \hat{\phi_{C}} \leq \frac{1}{4} \\ \frac{1}{4} + \hat{\phi_{C}} & \frac{1}{4} \leq \hat{\phi_{C}} \leq \frac{3}{4} \\ 1 & \frac{3}{4} \leq \hat{\phi_{C}} \leq 1 \\ \widehat{\phi_{C}} & \widehat{\phi_{C}} \triangleleft 0 \ , \ \widehat{\phi_{C}} \triangleright 1 \end{cases}
(2)

Normalized variables - non-uniform grids

\hat{\phi_{f}}= \begin{cases} 2 \hat{\phi_{C}} & 0 \leq \hat{\phi_{C}} \leq x_{Q}/2 \\ a_{f} + b_{f} \hat{\phi_{C}} & x_{Q}/2 \leq \hat{\phi_{C}} \leq 3 x_{Q}/2 \\ 1 & 3 x_{Q}/2 \leq \hat{\phi_{C}} \leq 1 \\ \hat{\phi_{C}} & \hat{\phi_{C}} \triangleleft 0 \ , \ \hat{\phi_{C}} \triangleright 1 \end{cases}
(2)

where

a_{f}= \left( 3 x_{Q} - 2 \right)/2
(2)
b_{f}= \left( 1 - x_{Q} \right) / x_{Q}
(2)

van Leer limiter

van Albada

Bounded Fromm

G.D. Van Albada, B.Van Leer, W.W.Roberts

A comparative study of computational methods in cosmic gas dynamics

Astron. Astrophysics, Vol. 108, p.76, 1982

OSPRE

bounded Fromm

Waterson [1995]

N.P.Waterson, H.Deconinck.

A unified approach to the design and application of bounded high-order convection schemes

In C. Taylor and P.Durbetaki, editors, Proc. Ninth Int. Conf. on Numer. Method. Laminar and turbulent Flow, pages 203-214, Pineride Press, Swansea, 1995

Return to Numerical Methods

Return to Approximation Schemes for convective term - structured grids

Retrieved from "https://mail.cfd-online.com/Wiki/Fromm_based_Schemes_-_structured_grids"
My wiki