ArticlePloS one2025
Thermal stress and thermal deformation of a nozzle flowmeter with different weld structures.
Article in PloS one, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Nozzle flow meters are widely used in the field of measuring high temperature media. In order to investigate the effect of nozzle flowmeter weld structure on thermal stress and thermal deformation, 10 different weld structures were designed in terms of the distance between the weld metal and the eight-groove nozzle, the width of the bottom of the weld metal, the taper angle of the weld metal, and the opening of the taper angle of the weld metal. The thermal stress and thermal deformation characteristics of the solid domain of the nozzle flowmeter are also calculated numerically for a high temperature case. The conclusion indicates that with the increase of the conical Angle of the weld metal, the thermal stress at the inlet and outlet of the nozzle flowmeter gradually decreases, and the thermal deformation changes less. The distance between the weld metal of the nozzle flowmeter and the eight-slot nozzle, the width below the weld metal, and the variation of the cone angle opening of the weld metal all have a relatively small impact on the thermal stress and deformation of the overall solid domain of the nozzle flowmeter.
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