Study Of Calculation Method Of Flow Induced Vibration In Tube And Shell Heat Exchanger

Tube and Shell heat exchangers are widely used in petroleum, chemical, power machines and other process industries. In order to enhance the performances of heat exchangers, the velocity of flow should be increased, which makes it easier to induce tube bundle vibration. According to incomplete statistics, flow induced vibration lead to local failure and even the overall broken, accounting for almost30%of the total damage to the heat exchanger. Therefore, after the completion of the thermal design of heat exchanger, the analysis of flow induced vibration in heat exchanger should be done to ensure that bundle response to the incentive in safe range,In the past, design of the heat exchanger is more conservative, and the traditional calculation method can meet the safety requirements. Now with the pursuit of more efficient and compact of heat exchanger, its velocity of flow is increasing too, so there is need for a more accurate determination of vibration, which requires higher accuracy of calculation method of the flow-induced vibration in heat exchanger. This paper references to the GB151, TEMA standards and relevant literature, to sort out an optimization calculation method of flow induced vibration in heat exchanger on the basis of engineering feasibility, which contains improvement like the definition of vortex shedding area, the vibration decision of multiple conditions, the calculation of velocity in different part, and so on. This calculation method is verified by HTRI and FLUENT.