|Table of Contents|

Preliminary study on scale effect of isolator(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2019年01期
Page:
14-18
Research Field:
研究与设计
Publishing date:

Info

Title:
Preliminary study on scale effect of isolator
Author(s):
FU Xiuwen1; 2; DU Quan2
(1.Science and Technology on Liquid Rocket Engine Laboratory, Xi'an 710100, China; 2.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
scramjet;  isolator;  scale offect
PACS:
V430
DOI:
-
Abstract:
As the Scramjet engine becoming larger, the scale effect of isolator became remarkable. By using the quasi-one-dimensional model of isolator, the scale effects of the isolator with the rectangular and circular sections including three cross-sectional areas were evaluated numerically.The preliminary results show that the growth of entrance boundary layer significantly affects the pressure distribution and the length of isolator.Under the condtion of given pressure rise, the circular isolator is longer than the rectangular isolator if the scale is same.The isolator length is not linearly related to the entrance hydraulic diameter, which indicats that the isolator length can't be geometrically scaled with the engine size.The larger the isolator scale, the more signicant the scale effect.

References:

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Last Update: 2019-02-20