NUMERICAL PREDICTION OF VIBRATION IN FLEXIBLE TUBE BUNDLES UNDER TWO PHASE CROSS FLOW WITH HEM

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KHOSROWDAD AMID; GHADIRI DEHKORDI BEHZAD; ANSARI MOHAMMAD REZA; HOURI JAFARI HAMED

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Journal: Modares Mechanical Engineering Year:2015 | Volume:14 | Issue:15 Page(s): 155-169

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Title

NUMERICAL PREDICTION OF VIBRATION IN FLEXIBLE TUBE BUNDLES UNDER TWO PHASE CROSS FLOW WITH HEM

Author(s)

KHOSROWDAD AMID | GHADIRI DEHKORDI BEHZAD | ANSARI MOHAMMAD REZA | HOURI JAFARI HAMED | Issue Writer Certificate

Keywords

TUBE BUNDLEQ2

TWO PHASE FLOWQ2

HEMQ2

FIVQ1

Abstract

Fluid-Elastic Instability is the most important mechanism among the vibration excitations in heat exchanger TUBE BUNDLEs subjected to cross flow. Flows through the heat exchanger are mostly TWO PHASE FLOW like air-water, vapor-water or Freon. Two phase numerical methods are quite complicated because of some parameters like VOF and interaction between two phases. Experimental studies are another problem and costly. Therefore, numerical methods are very important for studying TWO PHASE FLOW. In this article, threshold of vibration has been numerically predicted by simulation of incompressible, viscose, and unsteady cross flow through a TUBE BUNDLE in normal triangular arrangement. Interactions between the fluid and the structure have been counted in a fully coupled manner. HEM was used for analyzing TWO PHASE FLOW. In HEM method there is no difference in velocity between gas and fluid. In this study, TWO PHASE FLOW with HEM was solved around a single flexible cylinder surrounded by rigid and flexible tubes of bundle. Eventually, the flow through TUBE BUNDLE was simulated and analyzed by monitoring critical reduced velocity. Result shows that with increasing VOF, amplitude decreased and the critical velocity increased.

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APA: Copy

KHOSROWDAD, AMID, GHADIRI DEHKORDI, BEHZAD, ANSARI, MOHAMMAD REZA, & HOURI JAFARI, HAMED. (2015). NUMERICAL PREDICTION OF VIBRATION IN FLEXIBLE TUBE BUNDLES UNDER TWO PHASE CROSS FLOW WITH HEM. MODARES MECHANICAL ENGINEERING, 14(15), 155-169. SID. https://sid.ir/paper/177699/en

Vancouver: Copy

KHOSROWDAD AMID, GHADIRI DEHKORDI BEHZAD, ANSARI MOHAMMAD REZA, HOURI JAFARI HAMED. NUMERICAL PREDICTION OF VIBRATION IN FLEXIBLE TUBE BUNDLES UNDER TWO PHASE CROSS FLOW WITH HEM. MODARES MECHANICAL ENGINEERING[Internet]. 2015;14(15):155-169. Available from: https://sid.ir/paper/177699/en

IEEE: Copy

AMID KHOSROWDAD, BEHZAD GHADIRI DEHKORDI, MOHAMMAD REZA ANSARI, and HAMED HOURI JAFARI, “NUMERICAL PREDICTION OF VIBRATION IN FLEXIBLE TUBE BUNDLES UNDER TWO PHASE CROSS FLOW WITH HEM,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 15, pp. 155–169, 2015, [Online]. Available: https://sid.ir/paper/177699/en

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