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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermoelastohydrodynamic characteristics of T-grooves gas face seals
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Thermoelastohydrodynamic characteristics of T-grooves gas face seals

机译：T型槽气密封件的热弹性流体力学特性

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Thermoelastohydrodynamic characteristics of T-groove gas face seals are numerically investigated. The film pressure and temperature fields are calculated with consideration of the elastic and thermal distortions of the rings and the choked flow effect. The temperature difference between the outer radius and the inner radius is about 6 K below 1.0 MPa, and about 60 K above 1.0 MPa. Analysis results also show that a convergent gap is formed under 1.0 MPa and a divergent gap is formed when the sealing pressure is larger than 1.0 MPa. The thermoelastohydrodynamic effect becomes obvious and leads to significant decrease of the opening force when the sealing pressure is larger than 1.0 MPa. Besides, the dynamic opening force increases with the increasing rotational speed at low sealing pressures, exceeding 2% in degree in the case of sealing 0.5 MPa in the analysis, but it decreases at high pressures, exceeding 6% in degree in the case of sealing 3.0 MPa. T-groove gas face seal is more suitable to be applied under conditions of low sealing pressure and high rotational speed.
机译：数值研究了T型槽气端面密封件的热弹性流体力学特性。考虑环的弹性和热变形以及节流效应，计算膜压力和温度场。外径和内径之间的温差在1.0 MPa以下约为6 K，在1.0 MPa以上约为60K。分析结果还表明，当密封压力大于1.0 MPa时，会出现会聚间隙，而在1.0 MPa以下时会发散。当密封压力大于1.0 MPa时，热弹性流体动力作用变得明显，并导致打开力显着下降。此外，在低密封压力下，动态打开力随转速的增加而增加，在分析中，密封度为0.5 MPa时超过2％，而在密封时，动态打开力则降低，在密封时超过6％。 3.0兆帕T型槽气面密封更适合在低密封压力和高转速的条件下使用。

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