Transient temperature variation in a thermally orthotropic cylindrical shell
The two methods just outlined were utilized to obtain the correlation between predictions and data presented in Fig 3 Initially, Eqs (1) and (4) were used to predict Nusselt numbers for each of the instrumented sections Howevei, the results were nearly the same; thus an average value is presented Early time (high Reynolds number) data are subject to inaccuracies because of the small difference between the recovery and wall temperatures At a flight time of 100 sec when the local Reynolds number is approximately 10, boundary-layer transition appears to commence Therefore, subsequent data cannot be compared with the turbulent predictions