Page 145 - 摩擦学学报2025年第10期

1542 摩擦学学报（中英文） 第 45 卷

增幅较大；空气吸入时，阻尼略微增大后趋于稳定. 如 气吸入时，平均刚度非线性增大，且增幅较大；空气吸
图7(c)所示，进动半径增大，无空气吸入时，油膜对轴 入时，平均刚度线性增大.
颈所做负功呈非线性增大；空气吸入时，所做负功线 2.4 间隙比对油膜动特性影响分析
性增大，增幅和具体数值较小. 如图7(d)所示，空气吸 为了研究间隙比对油膜云图特性影响规律，选取
入时刚度变化幅值小. 如图7(e)所示，进动半径增大， 典型间隙比范围0.005 0~0.006 5开展分析，提取1/4 T
无空气吸入时，刚度非线性增大；空气吸入时，刚度线 时刻吸入/无吸入情况下油膜云图，其变化规律如图8
性增大，增幅较小. 如图7(f)所示，进动半径增大，无空 所示.

0.005 0 0.006 5
Pressure/Pa Pressure/Pa Pressure/Pa Pressure/Pa
2.832e+05 2.022e+05 1.477e+05 1.282e+05
With air ingestion 1.678e+05 1.111e+05 7.297e+04 5.932e+04
2.447e+05
1.052e+05
1.228e+05
1.718e+05
9.787e+04
2.063e+05
1.415e+05
8.228e+04
3.637e+04
1.294e+05
8.076e+04
4.807e+04
5.041e+04
1.342e+04
2.317e+04
9.093e+04
−9.529e+03
2.007e+04
5.248e+04
−1.729e+03
−2.663e+04
1.403e+04
−1.028e+04
−3.248e+04
−2.442e+04
−7.838e+04
−7.643e+04
−6.288e+04
−7.098e+04
−1.013e+05
−1.013e+05
−1.013e+05 −4.063e+04 −5.153e+04 −5.543e+04
−1.013e+05
Pressure/Pa Pressure/Pa Pressure/Pa Pressure/Pa
4.690e+05
2.919e+05
1.427e+05
Without air ingestion 3.549e+05 2.132e+05 1.383e+05 9.389e+04
1.982e+05
4.120e+05
2.526e+05
1.683e+05
1.183e+05
1.084e+05
1.739e+05
6.948e+04
2.979e+05
7. .841e+04
4.508e+04
1.346e+05
2.409e+05
1.838e+05
2.068e+04
4.845e+04
9.528e+04
5.595e+04
1.850e+04
−3.722e+03
1.268e+05
−1.146e+04
6.977e+04
1.663e+04
−2.812e+04
−4.142e+04
−2.269e+04
1.274e+04
−5.253e+04
−7.137e+04
−4.430e+04
−6.201e+04
−1.013e+05
−1.013e+05
−1.013e+05
−1.013e+05
(a) Pressure distribution cloud at different gap ratios −7.693e+04
0.005 0 0.006 5
Volume fraction Volume fraction Volume fraction Volume fraction
1.000e+00 1.000e+00 1.000e+00 1.000e+00
With air ingestion 7.000e-01 7.000e-01 7.000e-01 7.000e-01
9.000e-01
9.000e-01
9.000e-01
9.000e-01
8.000e-01
8.000e-01
8.000e-01
8.000e-01
6.000e-01
6.000e-01
6.000e-01
6.000e-01
5.000e-01
5.000e-01
5.000e-01
5.000e-01
4.000e-01
4.000e-01
4.000e-01
4.000e-01
3.000e-01
3.000e-01
3.000e-01
3.000e-01
2.000e-01
2.000e-01
2.000e-01
2.000e-01
1.000e-01
1.000e-01
1.000e-01
1.000e-01
0.000e+00
0.000e+00
0.000e+00
0.000e+00
Volume fraction Volume fraction Volume fraction Volume fraction
1.000e+00
Without air ingestion 8.365e-01 8.418e-01 8.520e-01 8.754e-01
1.000e+00
1.000e+00
1.000e+00
9.260e-01
9.377e-01
9.183e-01
9.209e-01
7.626e-01
8.130e-01
7.779e-01
7.548e-01
6.730e-01
6.835e-01
7.039e-01
7.507e-01
5.913e-01
6.299e-01
6.884e-01
6.044e-01
6.261e-01
5.095e-01
5.253e-01
5.559e-01
4.278e-01
5.637e-01
4.462e-01
4.818e-01
4.078e-01
3.460e-01
5.014e-01
3.670e-01
2.643e-01
3.338e-01
2.879e-01
2.598e-01
3.768e-01
2.088e-01
1.826e-01
(b) Cloud view of liquid phase distribution at different gap ratios 4.391e-01
0.005 0 0.006 5
Volume fraction Volume fraction Volume fraction Volume fraction
6.787e-01 6.478e-01 5. 965e-01 4.733e-01
6.108e-01
5.830e-01
5.369e-01
With air ingestion 4.751e-01 4.534e-01 4.176e-01 3.313e-01
4.259e-01
4.772e-01
5.182e-01
5.429e-01
3.786e-01
3.887e-01
3.579e-01
2840e-01
4.072e-01
2.366e-01
3.239e-01
2.983e-01
3.393e-01
1.893e-01
2.715e-01
2.591e-01
2.386e-01
1.790e-01
1.420e-01
1.943e-01
2.036e-01
1.357e-01
6.478e-02
4.733e-02
5.965e-02
6.787e-02
0.000e+00
0.000e+00 1.296e-01 1.193e-01 9.465e-02
0.000e+00
0.000e+00
Volume fraction Volume fraction Volume fraction Volume fraction
7.402e-01
8.174e-01
Without air ingestion 6.540e-01 6.330e-01 5.922e-01 4.986e-01
7.912e-01
6.232e-01
7.357e-01
7.121e-01
5.609e-01
6.662e-01
5.182e-01
5.538e-01
5.722e-01
4.363e-01
4.747e-01
3.739e-01
4.905e-01
4.441e-01
3.701e-01
3.116e-01
3.956e-01
4.087e-01
2.493e-01
3.165e-01
2.961e-01
3.270e-01
2.221e-01
2.452e-01
2.374e-01
1.870e-01
1.582e-01
1.635e-01
1.480e-01
1.246e-01
7.402e-02
7.912e-02
8.174e-02
0.000e+00
0.000e+00
0.000e+00
0.000e+00
(c) Cloud view of vapor distribution at different gap ratios 6.232e-02
Fig. 8 Cloud diagram of 1/4 T pressure, liquid phase and gas phase distribution under different gap ratios
图 8 不同间隙比下1/4 T压力、液相和气相分布云图