Most steady plane detonation waves are unstable. For certain parameter values, the instability is one that causes the steady detonation wave to oscillate. This is a plot of a numerical calculation of a pulsating detonation wave. The calculation was performed using the Sanders-Weiser staggered grid scheme for hyperbolic systems in one space dimension. Depicted are:
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I enjoy bicycle riding, and for the past seven years, I have ridden in the BP MS-150. This is a two-day bicycle ride from Houston to Austin, to raise funds for research on Multiple Sclerosis. Please help eradicate the devastating effects of this disease by making a donation to the National Multiple Sclerosis Society, as my sponsor in this event. I will ride again, April 21-22, 2012. Click here to make a donation! Thank you!
I also like to ride with the Houston Bicycle Club.
I am an active member of Christ the Lord Lutheran Church, which is part of the Wisconsin Evangelical Lutheran Synod. At the moment I serve as Treasurer of this congregation, and as a member of the Board of Directors of Sienna Lutheran Academy.
Dr. Milne Ongley is my favorite Doctor of Orthopedic Medicine. Under his care my lower back, hips, shoulders, neck, feet and neck are all working much better. I highly recommend him to anyone with serious joint problems, especially anyone with chronic back pain.
Watch out for Weapons of Math Instruction!