Base Flow Predictions for a Lightsat Launcher at Supersonic Speeds

Serpico, M.; Schettino, Antonio; Ciucci, A.; Falconi, D.; Fabrizi, M.

doi:10.2514/2.3439

Cited by 4 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The basic assumption in this model is that the turbulent viscosity coefficient depends only on the instantaneous local flow variables. In spite of the simplicity, this zero-equation model often gives good results compared to the more complex models like the two-equation k-ε models as reported by the study of Serpico et al [3]. The code has already been applied for many internal and external flows and was recently applied for complex problems involving nozzle exhaust jets for prediction of pressure and heat transfer computations on the base region of single-engine launch vehicle configuration and good comparison was obtained with flight measurements results [4].…”

Section: Cfd Analysismentioning

confidence: 85%

Thermal Analysis of a Jet Deflector Subjected to Liquid Engine Jet Exhaust in a Static Test

Anoop

Unnikrishnan

Sundar

et al. 2014

Heat Transfer Engineering

View full text Add to dashboard Cite

The survivability of a jet deflector encountering severe heating conditions due to the direct impingement of exhaust gases from a liquid engine is analyzed. Using engineering methods the thermal environments and temperature history are estimated. The cooling of the jet deflector using a water stream into the exhaust stream through spray nozzles located upstream from the deflector to reduce the exhaust temperature is considered. Since the major source of heating of the jet deflector is by convection, the convective heating due to jet impingement is evaluated. A flow field from the exhaust of the liquid engine is generated using a finite-volume-based Navier-Stokes computational fluid dynamics solver. For evaluating convective heat transfer coefficient, engineering methods are used based on the flow-field data generated. The theoretical flow-field data generated do not account for jet water mixing. To account for the water jet effect, an energy balance method is used to estimate the jet temperature and a one-dimensional thermal response analysis is carried out using in-house design code. The computed temperature data are compared with the measured temperature data and the survivability of the jet deflector is assured.

show abstract

Section: Cfd Analysismentioning

confidence: 85%