NOTES ON FLOW REGIMES AND WAKE HEATING OF RE-ENTERING VEHICLE,
Abstract
The report discusses the flow regimes and wake heating during reentry. It shows that the slip flow conditions occur at much smaller Reynolds numbers than usually assumed and therefore greatly decrease slip flow's importance. The major flow problems associated with re-entering trajectories are located in the continuum flow regimes. It also provides criteria for occurrences of such phenomena as the disappearance of inviscid flow-layer, sharp shock wave, diffusion and merging of shock wave with boundary layer, distinct slip effects and ceasing of the application of the continuum flow theory. The study of the wake heating in hypersonic flow indicates generally a drop in the heat transfer coefficient after separation and an increase near and behind recompression, with the average over the base flow floor varying from 50 to 120 per cent of the heat transfer coefficient corresponding to an equivalent length of attached flow. The thickness of the on-coming boundary layer has a major effect on the heat transfer coefficients of the wake flow. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 14, 1961
- Accession Number
- AD0681796
Entities
People
- Eugene Stolarik
Organizations
- General Dynamics