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   fluid-structure interaction simulation of excess flow valve movement at different operating pressures and gas flow rates  
   
نویسنده coşkun g. ,pehlivan h.
منبع journal of applied fluid mechanics - 2021 - دوره : 14 - شماره : 2 - صفحه:615 -625
چکیده    Excess flow valves (efv) for gas-stop systems is generally used in natural gas pipelines to prevent possible damages or destruction due to gas leakage. it can be used in a wide operating range of pressure, but the shutoff flow rate could be in various values at different pressures since natural gas can easily be compressed and can reach higher density. in this study, shutoff and nominal gas flow which effect on a spring force attached to an efv system simulation by using fluid solid interaction (fsi) strategy was studied. furthermore, user define function (udf) adapted to simulation to obtain the timedependent deformation of the spring. the simulations were repeated at five different operating pressures (1-5 bar) with changing flow rates to show if efv can shutoff the system or not. results were validated against experimental data of the efv to show the consistency of the fsi strategy. moreover, detailed behaviour information of the efv obtained by means.
کلیدواژه computational fluid dynamics ,fluid solid interaction ,excess flow valve ,adaptive mesh refinement ,compressibility effect ,natural gas flow
آدرس sakarya university, engineering faculty, mechanical engineering department, turkey, sakarya university, engineering faculty, mechanical engineering department, turkey
پست الکترونیکی pehlivan@sakarya.edu.tr
 
     
   
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