The structural steel throttle valve is locked with 1W heat parts.The outside is in contact with 20℃ and other surface are insulated.What is the highest fluid temperature inside the valve? What is the maximum total deformation? What is the natural frequency of the modality? Sol: Setting 1W heat flow on the valve lock surface and through the optimisation analysis, the internal maximum temperature can withstand 39.71℃ and the external minimum temperature is 39.15℃. The maximum total deformation is 0.13mm which occurs at the thinnest bottom but the safety factor is still within 1 at safe range. In addition, 6 modal analysis results(598.85Hz、702.86Hz、924.08Hz、1140.2Hz、1307.3Hz、1371.4Hz) were set. The change in flow rate and temperature were observed by the natural frequency of the throttle valve and found that the 3,4 and 5 groups of modal are prone to stress concentration at the same location, which can be used as a reference for strutural design of weight reduction or reinforcement to avoid resonance through external force. Valve analysis result: https://drive.google.com/drive/folders/1dx4F6DXRdRcQskkXCyaOgE1opEFzigoO?usp=sharing ANSYS Certificate：https://drive.google.com/file/d/1Bhm6TDrP1CtHGWDYfUvSOJDntbce49sj/view?usp=sharing https://drive.google.com/file/d/1cIQWwadVuwXqAkBsVutUxWb-DXFFBfqD/view?usp=sharing