|Table of Contents|

Study on flow resistance and heat transfer characteristics of rocket kerosene adding drag reducer(PDF)

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

Issue:
2018年05期
Page:
66-70
Research Field:
测控与试验
Publishing date:

Info

Title:
Study on flow resistance and heat transfer characteristics of rocket kerosene adding drag reducer
Author(s):
LUO Yuhong;  YOU Yue;  JIANG Rongpei;  SUN Haiyun;  FANG Tao;  LIU Zhaoyang
Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
rocket kerosene;  drag reducer;  flow resistance;  heat transfer characteristic
PACS:
V312-34
DOI:
-
Abstract:
According to the problem that the flow resistance in kerosene pipeline of LOX/kerosene rocket engine was higher when its performance improved, the electric heat transfer experimental system was used to investigate the effect of macromolecule drag-reduction additives on flow resistance and heat transfer characteristics of rocket kerosene in simulative pipeline.In addition, the influence of the additives on physical-chemical properties of rocket kerosene were also analyzed.The results show that the physical-chemical properties of rocket kerosene containing 0.05% drag-reduction additives can satisfy the requirement of key technical specification for kerosene of liquid rocket engine.The addition of drag reducer into rocket kerosene have a certain drag reduction effect.The drag reduction efficiency of JZ-1 and JZ-2 can reach up to 60.3%～76.4% and 33.1%～ 48.4% respectively when velocity is 20～60 m/s and temperature is 50～200 ℃.However, the addition of drag reducer into rocket kerosene decreases the heat transfer performance of kerosene, and the larger the molecular weight of the drag reducer added into the kerosene is, the more obviously the heat transfer performance reduces.The heat transfer coefficients of kerosene with JZ-1 and JZ-2 are decreased by 32.8% and 8.3% respectively when velocity is 50 m/s and temperature is 175 ℃.JZ-2 has better overall performance in changing flow resistance and convective heat transfer.

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