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- W643464486 abstract "Problems such as the overheating of aerials by hot exhaust gas have been experienced by the Royal Navy on their new generation of gas turbine powered ships. Model tests indicate that the temperature trajectories from square, rectangular and clusters of circular exhausts may be correlated on the same basis as single circular exhausts, by substitution of a characteristic dimension in a simple temperature-decay equation. Plume temperature measurements show that lower temperatures can be obtained by enhancing the vortex activity in the plume, thereby causing more ambient air to be entrained, and that this can be achieved by using exhausts other than circular, where the plume drag is increased. Plume temperatures may also be reduced by introducing air entrainment into the uptake itself. Here it is important to ensure that the low-momentum entrained cooling air surrounds the hot exhaust jet as it leaves the uptake. It is then easily deflected into twin vortices in the downstream plume and these entrain ambient air. Air-entraining exhausts produce at least 20 percent lower % CTmax values in the downstream hot gas plume than more conventional exhausts." @default.
- W643464486 created "2016-06-24" @default.
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- W643464486 date "1978-06-01" @default.
- W643464486 modified "2023-09-28" @default.
- W643464486 title "Aerodynamic Model Study of Marine Gas Turbine Exhaust Cooling" @default.
- W643464486 doi "https://doi.org/10.5957/jsr.1978.22.2.123" @default.
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