EFFECTS OF FOREIGN GAS INJECTION ON LAMINAR BOUNDARY LAYER STABILITY AT LOW MACH NUMBERS.
NAVAL ORDNANCE LAB WHITE OAK MD
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The stability characteristics of laminar boundary layer profiles including foreign gas injection were evaluated by solving the disturbance equations for the eigenvalues which define the minimum critical Reynolds number for neutral stability. The profiles utilized demonstrate the differences which accrue from using light and heavy molecular weight gases as the injectant. Results obtained by asymptotic procedures for Mach numbers less than 1.3 show that the heavier gas carbon tetrachloride resulted in markedly more stable boundary layers than a lighter gas helium. Author
- Fluid Mechanics