convergence acceleration by preconditioning method
I am interesting in convergence acceleration of numerical algorithm for the NavierStokes equations in low speed regime with a preconditioning method. I read "A timeaccurate algorithm for chemical nonequilibrium viscous flows at all speeds" of Shuen, J.S., Chen, C. H., and Choi, Y., which is the paper in AIAA/SAE/ASME/ASEE 28 th Joint Propusion Conference and Exhibit, July 68 1992 Nashville TN US. It is interested. However I don't understand some things in this paper. I try to find the email address of the authors, but I couldn't find. Do any one have any suggestion or know one of the authors? Any suggestion about convergence acceleration by preconditioning method is very appreciate for me.
Thank you. 
Re: convergence acceleration by preconditioning method
Some another articles of these authors on related topics can be found in the Journal of Computational Physics. You can find there much more preconditionig schemes for lowMach or incompressible formulations. Email addresses are also shown.
With best regards 
Re: convergence acceleration by preconditioning method
Dear Shigunov, Could you please give me more detail about this?
Thank you very much. Atit Koonsrisuk 
Re: convergence acceleration by preconditioning method

Re: convergence acceleration by preconditioning method
Dear colleague,
there is a small list of references on the preconditioning articles that I have at hand. You can find further references also therein. 1. Choi & Mercle, J. Comput. Phys. 105, 207223 (1993) 2. Shuen, Chen & Choi, J. Comput. Phys. 106, 306318 (1993) 3. Ramshaw & Mousseau, Computers & Fluids 20(2), 177186 (1991) 4. Liu, Zheng & Sung, J. Comput. Phys. 139(1), 3557 (1998) 5. many works by Turkel With best regards 
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