王金龙,刘昭良,崔大伟,苑成东

• 1:潍坊学院建筑工程学院
• 2:山东科技大学机械电子工程学院
• 3:潍坊学院机电与车辆工程学院

摘要(Abstract)：

为了提高低流量情况下换热器的换热效率,基于有限元模拟技术,采用CFD软件对内螺旋连续式换热器和传统弓形式换热器的换热进行数值模拟。结合场协同理论及数值分析,研究了两者之间的温度场、流速场、压力场对换热效率的影响。结果表明:相较于传统弓形式换热器,内螺旋连续式换热器在流量较小的情况下流速场中有射流、扰流、二次流存在,有更少的流动死区、更大的换热面积,同时扰流的存在加大了换热系数。综合数值模拟与分析得出,在流量较小的情况下,通过增大换热面积与换热系数,内螺旋连续式换热器明显比传统弓形式换热器效率高,换热效率提高约12%。该分析为低流量情况下换热器的传热效率、强化传热的研究提供了有效理论依据。

关键词(KeyWords)： 内螺旋连续式;铜换热器;二次流;壳侧换热;低流量

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51004077);; 山东省优秀中青年科学家科研奖励基金(BS2010CL046)

作者(Author): 王金龙,刘昭良,崔大伟,苑成东

DOI: 10.13289/j.issn.1009-6264.2019-0029

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