An apparatus for heat transfer and frictional studies of gas flow in a tube with large temperature differences

The design of an apparatus for heat transfer and frictional studies of gas flow in a tube with large temperature gradients is presented. This experimental apparatus is unique in that it incorporates heat flux meters, temperature and velocity probes, and a means of varying the heat flux distribution. Temperature and velocity profiles, previously not available, can be obtained by traversing the air stream with the probes. Direct measurements of the heat flux can be made with the heat flux meters. With this apparatus more accurate values for heat transfer coefficients and friction factors should be obtained, as well as a far greater insight into the physical problem.