在軸承系統的設計與分析中，精確估算負載量、摩擦力、偏心角及側向流率等參數是相當重要的。由文獻中發現，在等溫層流、等溫紊流與熱液動力層流領域，已有充分的軸承參數研究，惟熱液動力紊流領域尚未有完整的參數研究。本研究即是以一廣義的熱液動力潤滑分析模式為工具，針對有限寬頸軸承進行參數研究，並找出性能參數的計算公式。研究的領域包含等溫紊流與熱液動力紊流領域。

　　本研究使用的分析模式結合Legendre collocation方法、容積流模式及孔蝕演算法，並考慮紊流、熱液動力及孔蝕效應。由分析成果顯示，當幾何參數偏心率增加，負載量、側向流率隨之增加，偏心角則減少。當寬度 增加，負載量則隨之增加，但側向流率隨之減少。當紊流強度參數 增加，負載量和摩擦力隨之增加，但對偏心角則微量增加。當熱液動力效應參數無因次溫度-黏度參數增加，流體黏度降低，負載量隨之減少,對偏心角則增加。本研究應用Least squares方法建立紊流形態熱液動力有限寬頸軸承性能參數之計算公式。設計者只要使用工程計算機輸入相關參數，即可算出軸承之性能參數。

　　For the design of bearing system, it is important to have an accurate estimation of the load capacity, friction force, eccentricity angle, and side leakage. It is found from the literature that the parametric studies of hydrodynamic journal bearings have been made in laminar isothermal, laminar thermohydrodynamic (THD), and turbulent isothermal regimes. For turbulent THD bearings, the parameter studies have not been in a completed status. The objectives of this study are to use a general fluid-film lubrication model to analyze finite-width journal bearings operating in turbulent isothermal and turbulent THD regimes, and to establish the formulations for the performance parameters.

　　The analysis model used in this study combines the Legendre collocation method, bulk-flow model, and Elrod’s cavitation model. This model considers turbulence, THD, and cavitation effects. The results show that the load capacity and the side leakage increases with the eccentricity ratio, but the eccentricity angle decreases as the eccentricity ratio increases. When bearing width increases, the load capacity will increase but the side leakage will decrease. When the mean Reynolds number increases, the load capacity and friction force will increase significantly, but the eccentricity angle increases slightly. The THD effects significantly decrease the load capacity and friction force, yet increase the eccentricity angle. The formulations for the performance parameters were found using the least-squares method. With the equations provided, designers can quickly calculate the parameter using a calculator.

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