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Biographies
January-March 2006 (vol. 28 no. 1)
pp. 99-103
Michael R. Adamson, Adamson Historical Consulting
This biography of William F. Ballhaus Jr. discusses his role in creating the field of computational fluid dynamics at the NASA Ames Research Center.

1. In 1970, Magnus and Yoshihara published a transonic solution for a practical lifting airfoil with embedded shock. See R. Magnus and H. Yoshihara, "Inviscid Transonic Flows Over Airfoils," AIAA J. Dec. 1970, pp. 2157-2162. Murman and Cole's relaxation algorithm, which calculated solutions to the transonic small-disturbance potential equation for supercritical flows about 2D airfoils, soon followed. See E.M. Murman and J.D. Cole, "Calculation of Plane Steady Transonic Flows," AIAA J., Jan. 1971, pp. 114-121.
2. Quoted in D.J. Born, "A New CEO for a New Era," Crosslink, Summer 2001, p. 5.
3. W.F. Ballhaus and F.R. Bailey, Numerical Calculation of Transonic Flow about Swept Wings," AIAA Paper 72-677, 1972; F.R. Bailey and W.F. Ballhaus, "Relaxation Methods for Transonic Flow about Wing-Cylinder Combinations and Lifting Swept Wings," Lecture Notes in Physics , vol. 19, Springer Verlag, 1973; W.F. Ballhaus, "Some Recent Progress in Transonic Flow Computations," Computational Fluid Dynamics, Lecture Series 87, Von Karman Inst. for Fluid Dynamics, 1976, pp. 6-15.
4. H. Lomax, F.R. Bailey, and W.F. Ballhaus, On the Numerical Simulation of Three-Dimensional Transonic Flow with Application to the C-141 Wing, NASA TN-6933, 1973; W.F. Ballhaus, Computational Aerodynamics and Design, NASA TM-84257, 1982.
5. W.F. Ballhaus, Computational Aerodynamics and Supercomputers, NASA TM-85887, 1985.
6. W.F. Ballhaus and H. Lomax, "The Numerical Simulation of Low Frequency Unsteady Transonic Flow Fields," Lecture Notes in Physics, vol. 35, Springer Verlag, 1975, pp. 57-63.
7. W.F. Ballhaus, "Some Recent Progress in Transonic Flow Computations," pp. 52-54 (see ref. 3).
8. W.F. Ballhaus and J.L. Steger, Implicit Approximate-Factorization Schemes for Low-Frequency Transonic Flow Equations, NASA TM X-73082, 1975; W.F. Ballhaus, "Some Recent Progress in Transonic Flow Computations," pp. 54-57 (see ref. 4).
9. W.F. Ballhaus and P.M. Goorjian, "Computation of Unsteady Transonic Flows by the Indicial Method," AIAA J., Feb. 1978, pp. 117-124; H. Lomax, M.A. Heaslet, F.B. Fuller, and L.E. Sluder, Two- and Three- Dimensional Unsteady Lift Problems in High-Speed Flight, NACA Report 1077, 1952.
10. W.F. Ballhaus and P.M. Goorjian, "Implicit Finite-Difference Computations of Unsteady Transonic Flows about Airfoils," AIAA J., Dec. 1977, pp. 1728-1735.
11. W.F. Ballhaus, A. Jameson, and J. Albert, "Implicit Approximate-Factorization Schemes for Transonic Flow Problems," AIAA J., June 1978, pp. 573-579.
12. W.F. Ballhaus and F.R. Bailey, "Computational Aerodynamics on Large Computers," Computers and Fluids, Mar. 1980, pp. 133-144.
13. D.R. Chapman, "Computational Aerodynamics Development and Outlook," pp. 1297-1300; V.L. Peterson, W.F. Ballhaus, and F.R. Bailey, Numerical Aerodynamic Simulation (NAS), NASA TM-84386, 1983; D.R. Chapman, H. Mark, and M.W. Pirtle, "Computers vs. Wind Tunnels for Aerodynamic Flow Simulations," AIAA Aeronautics and Astronautics, Apr. 1975, p. 30.
14. The winning paper was F.R. Bailey and W.F. Ballhaus, Comparisons of Computed and Experimental Pressures for Transonic Flows about Isolated Wings and Wing-Fuselage Configurations, NASA SP-347, pt. 2, 1975, pp. 1213-1231; H. Mark quoted in "Bailey/Ballhaus Honored," Astrogram,2 June 1977.
15. V.L. Peterson, W.F. Ballhaus, and F.R. Bailey, "Numerical Aerodynamic Simulation (NAS)," p. 9 (see ref. 13); V.L. Peterson and W.F. Ballhaus, "History of the Numerical Aerodynamic Simulation Program," Supercomputing in Aerospace, NASA CP-2454, 1987.
16. "Ballhaus Appointed to Headquarters Post," Astrogram,29 Jan. 1988; "Ballhaus Resigns from Ames," Astrogram, 14 Jul. 1988; W.F. Ballhaus, "A Message from the Director's Office," Astrogram,14 Jul. 1988.
1. W.F. Ballhaus and F.R. Bailey, Numerical Calculation of Transonic Flow about Swept Wings, AIAA Pape72-677, 1972.
2. W.F. Ballhaus and F.X. Caradonna, "The Effect of Planform Shape on the Transonic Flow Past Rotor Tips," Aerodynamics of Rotary Wings (AGARD Conf. Proc.)1973.
3. H. Lomax, F.R. Bailey, and W.F. Ballhaus, On the Numerical Simulation of Three-Dimensional Transonic Flow with Application to the 141 Wing, NASA TN-6933, 1973.
4. W.F. Ballhaus and H. Lomax, "The Numerical Simulation of Low Frequency Unsteady Transonic Flow Fields," Lecture Notes in Physics, vol35, Springer Verlag, 1975, pp.57-63.
5. R.M. Beam and W.F. Ballhaus, Numerical Integration of the Small-Disturbance Potential and Euler Equations for Unsteady Transonic Flow, NASA SP-347, pt. 2, 1975, pp. 789-809.
6. W.F. Ballhaus and J.L. Steger, Implicit Approximate-Factorization Schemes for the Low-Frequency Transonic Flow Equations, NASA TM 73082, 1975.
7. W.F. Ballhaus, F.R. Bailey, and J. Frick, "Improved Computational Treatment of Transonic Flow about Swept Wings," Advances in Engineering Science, vol. 4, 1976, pp. 1311-1320.
8. W.F. Ballhaus and P.M. Goorjian, "Implicit Finite-Difference Computations of Unsteady Transonic Flows about Airfoils," AIAA J., Dec. 1977), pp. 1728-1735.
9. W.F. Ballhaus and P.M. Goorjian, "Computation of Unsteady Transonic Flows by the Indicial Method," AIAA J., Feb. 1978, pp. 117-124.
10. W.F. Ballhaus, A. Jameson, and J. Albert, "Implicit Approximate-Factorization Schemes for the Efficient Solution of Steady Transonic Flow Problems," AIAA J., Jun. 1978, pp. 573-579.
11. W.F. Ballhaus, "A Fast Implicit Solution Procedure for Transonic Flows," Lecture Notes in Physics, vol. 91, no. 2, Springer Verlag, 1977, pp. 90-102.
12. T.L. Holst and W.F. Ballhaus, "Fast, Conservative Implicit Schemes for the Full Potential Equation Applied to Transonic Flows," AIAA J., Feb. 1979, pp. 145-152.
13. W. F. Ballhaus, "Computational Aerodynamics and Design," Lecture Notes in Physics, vol. 170, Springer Verlag, 1983, pp.1-20.
14. W.F. Ballhaus, "Computational Aerodynamics and Supercomputers," Proc. 28th Int'l Conf. IEEE Computer Society, IEEE CS Press, 1984.

Index Terms:
William F. Ballhaus Jr., computational fluid dynamics, NASA Ames Research Center, Illiac IV, Numerical Aerodynamic Simulation facility
Citation:
Michael R. Adamson, "Biographies," IEEE Annals of the History of Computing, vol. 28, no. 1, pp. 99-103, Jan.-March 2006, doi:10.1109/MAHC.2006.5
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