Effect of Coolant Injection to Small-Scale Diffuser Simulating SSME Testing Conditions

Cho, Christopher S.; Gerald, A. Pitalo

doi:10.2514/6.2002-4282

Cited by 1 publication

(1 citation statement)

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“…Kandula [8] developed a one-dimensional control volume formulation to predict turbulent jet mixing noise reduction of the exhaust plume by water injection and the mechanism of interaction of water injection and gas. Cho [9] investigated the effect of coolant injection to small-scale diffuser, and the results indicated that the ratio between gas and water mass flow rates is an important parameter in determining the cooling characteristics. Krothapalli and his co-workers [10][11][12] studied the effect of different size droplets.…”

Section: Introductionmentioning

confidence: 99%

Cooling Effect of Water Injection on a High-Temperature Supersonic Jet

Jiang

Shen

et al. 2015

Energies

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Abstract:The high temperature and high pressure supersonic jet is one of the key problems in the design of solid rocket motors. To reduce the jet temperature and noise, cooling water is typically injected into the exhaust plume. Numerical simulations for the gas-liquid multiphase flow field with mixture multiphase model were developed and a series of experiments were carried out. By introducing the energy source terms caused by the vaporization of liquid water into the energy equation, a coupling solution was developed to calculate the multiphase flow field. The temperature data predictions agreed well with the experimental results. When water was injected into the plume, the high temperature core region area was reduced, and the temperature on the head face was much lower than that without water. The relationship between the reduction of temperature on the bottom plate and the momentum ratio is developed, which can be used to predict the cooling effect of water injection in many cases.

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