CAJ | 학술논문

文中采用CFD数值模拟的方法对多孔均流式流量计进行仿真研究。首先利用正交试验法确定了其最优结构参数，然后分析了流场的特点，进而比较了管道雷诺数、等效直径比、孔板厚度和不同流体类型对多孔均流式流量计与标准孔板流量计的性能的影响。结果表明，多孔均流式流量计孔板产生的涡流的尺寸更小，也更加均匀，且压损系数小，流出系数更大、更稳定；在湍流状态下，多孔均流式孔板的流出系数与雷诺数和流体基本无关。
문중채용CFD수치모의적방법대다공균류식류량계진행방진연구。수선이용정교시험법학정료기최우결구삼수，연후분석료류장적특점，진이비교료관도뢰낙수、등효직경비、공판후도화불동류체류형대다공균류식류량계여표준공판류량계적성능적영향。결과표명，다공균류식류량계공판산생적와류적척촌경소，야경가균균，차압손계수소，류출계수경대、경은정；재단류상태하，다공균류식공판적류출계수여뢰낙수화류체기본무관。
The CFD method was used to numerically simulate the performance of multi-hole balanced-flow flowmeter.First,or-thogonal experimental design was used to determine its optimal structure;Then characteristic of its flow field was analyzed and how the Reynolds number,the equivalent diameter ratio,the plate thickness and different working mediums affect multi-hole balanced-flow flowmeter were studied.The results show that,compared with a single-hole flowmeter,eddies generated by multi-hole balanced-flow flowmeter is smaller and more uniform,therefore its pressure loss coefficient is smaller,and the flow coefficient is bigger and steadier.Under turbulence state,flow coefficient is not effected by Reynolds number and the flow medium.