Numerical Analysis of Flowfield in Linear Plug Nozzle with Base Bleed

Soman, Sandeep; Suryan, Abhilash; Nair, Prasanth P.; Kim, Heuy Dong

doi:10.2514/1.a34992

Cited by 12 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Fig. 2, for example, the numerical results at NPR = 3.1, from [11] are compared with those obtained in this work. Fig.…”

Section: Resultsmentioning

confidence: 89%

“…The experimental work of S. B. Verma and M. Viji [10] consists in testing a linear plug nozzle. The nozzle is fed with air stored in a tank at ambient temperature and pressure, but both values are not explicitly provided in the reference paper; in this work, they have been assumed of 1 bar, as done also in [11], and 300 K, respectively. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…1, that allow measurements for the reconstruction of the time-averaged pressure distribution along the spike wall. Images from [10] The simulations have been run until the jet achieved stationary conditions, and the obtained results have been compared with the data available in the two reference papers ( [10] and [11]) in terms of flow topology and time-averaged pressure distribution along the spike wall. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 1: A comparison between the numerical results provided by OpenFOAM (a) and ANSYSFluent (b) at NPR = 3.1[11].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Validation of a numerical strategy to simulate the expansion around a plug nozzle

Gagliardi

2023

Materials Research Proceedings

View full text Add to dashboard Cite

Abstract. Rocket engines currently use traditional bell-shaped nozzles that have a fixed area ratio and can only operate at maximum efficiency at a given altitude. Plug nozzles have been proposed as an alternative solution to achieve higher performance over a larger altitude range. Unlike bell nozzles, the flow is free to expand along the plug, as it is no longer surrounded by solid boundaries. Therefore, plug nozzles can adapt to different altitudes by expanding the flow to ambient pressure, resulting in continuous altitude adaptation. Due to the high surface area that needs to be cooled, one of the main challenges of plug nozzle design is thermal management. However, the introduction of aerospike geometry, which is essentially a truncated plug nozzle, has helped mitigate this issue. Simulating an aerospike engine is challenging due to the interaction between the plume and the external flow, which is necessary to accurately predict thrust. In this work, a numerical strategy for predicting the performance of an aerospike engine, during a static fire, was developed and validated.

show abstract

“…In Fig. 2, for example, the numerical results at NPR = 3.1, from [11] are compared with those obtained in this work. Fig.…”

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%