Influence of Micropolar Lubrication on the Performance of 4-Pocket Capillary Compensated Conical Hybrid Journal Bearing

Table 2

Bearing performance characteristics of four-pocket conical hybrid journal bearing system operating with Newtonian and micropolar lubricant with different semicone angles.

	𝛾	Newtonian	𝑁^2=0.4				𝑁^2=0.5
			𝑙=5	𝑙=10	𝑙=20	𝑙=30	𝑙=5	𝑙=10	𝑙=20	𝑙=30
𝑝max	10^∘	0.6053	0.7084	0.6796	0.6485	0.6352	0.7363	0.6947	0.6553	0.6394
	20^∘	0.6236	0.7268	0.6995	0.6684	0.6547	0.7547	0.715	0.6754	0.6591
	30^∘	0.6661	0.7669	0.7428	0.7126	0.6987	0.7939	0.7586	0.72	0.7034
	40^∘	0.7306	0.8233	0.8045	0.7775	0.7639	0.8479	0.8201	0.785	0.7687
ℎmin	10^∘	0.8721	0.8929	0.8884	0.8825	0.8795	0.8977	0.8914	0.884	0.8805
	20^∘	0.8506	0.8667	0.8633	0.8587	0.8564	0.8704	0.8656	0.8599	0.8572
	30^∘	0.8002	0.8117	0.8094	0.8062	0.8045	0.8144	0.8111	0.807	0.8051
	40^∘	0.7214	0.7287	0.7274	0.7253	0.7243	0.7305	0.7286	0.726	0.7247
𝑄	10^∘	1.0033	0.7935	0.8522	0.9156	0.9426	0.7368	0.8218	0.902	0.9341
	20^∘	0.9378	0.7285	0.7841	0.8472	0.8748	0.6722	0.7528	0.833	0.8659
	30^∘	0.8276	0.4889	0.527	0.5814	0.6087	0.5695	0.641	0.719	0.7525
	40^∘	0.6756	0.4889	0.527	0.5814	0.6087	0.4395	0.4956	0.5663	0.599
𝑆𝑥𝑥	10^∘	2.421	2.591	2.646	2.596	2.551	2.628	2.702	2.626	2.57
	20^∘	3.063	3.141	3.115	3.072	3.065	3.077	3.195	3.147	3.093
	30^∘	3.652	3.737	3.772	3.744	2.822	3.609	3.772	3.802	3.764
	40^∘	4.493	4.42	4.388	4.537	4.553	4.269	4.369	4.552	4.566
𝑆𝑧𝑧	10^∘	2.52	2.64	2.712	2.678	2.638	2.667	2.764	2.707	2.657
	20^∘	3.011	3.099	3.19	3.177	3.138	3.104	3.24	3.207	3.158
	30^∘	3.672	3.674	3.766	3.812	3.788	3.624	3.799	3.84	3.807
	40^∘	4.522	4.43	4.402	4.557	4.577	4.275	4.38	4.571	4.588
𝐶𝑥𝑥	10^∘	4.091	5.211	4.885	4.545	4.403	5.536	5.054	4.618	4.448
	20^∘	5.166	6.533	6.156	5.74	5.562	6.931	6.368	5.832	5.619
	30^∘	7.006	8.728	8.295	7.774	7.54	9.227	8.577	7.899	7.618
	40^∘	10.368	12.595	12.117	11.456	11.134	13.236	12.511	11.638	11.248
𝐶𝑧𝑧	10^∘	4.04	5.171	4.841	4.498	4.354	5.5	5.011	4.571	4.399
	20^∘	5.12	6.5	6.117	5.697	5.518	6.901	6.331	5.79	5.576
	30^∘	6.965	8.701	8.264	7.738	7.502	9.205	8.548	7.864	7.58
	40^∘	10.335	12.578	12.097	11.43	11.106	13.224	12.492	11.613	11.22
𝜔th	10^∘	2.329	2.391	2.423	2.405	2.386	2.405	2.446	2.418	2.394
	20^∘	2.511	2.552	2.589	2.582	2.566	2.556	2.61	2.595	2.574
	30^∘	2.718	2.721	2.756	2.771	2.762	2.704	2.768	2.782	2.769
	40^∘	2.958	2.929	2.92	2.971	2.977	2.878	2.914	2.976	2.981

𝜆=1.0, Ω=1.0, 𝑊_𝑟=0.5, 𝐶_𝑠2=0.5, 𝐴_𝑝/𝐴_𝑏=0.333.