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The performance characteristics of noncircular bearings are known to be superior to those of the circular bearings. The two lobe bearings are finding increasing application in high speed turbomachinery. Using a variational solution, detailed design data have been computed for two-lobe bearings in this paper. The data include Sommerfeld number, equilibrium locus, fluid film stiffness and damping coefficients, end-flow, friction parameter, and temperature rise parameter.

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7'110 ./lrrirl ,filrrt lrcbrictrtioir eqt~(~tiori f i r a zero-speed, orificecorrrprr~.vrtt(~l, rrr rtllipockrt Iryrlrostntic joz~rrtal bearing is solved by a fir1ik11 r l~r r r~r~t rrr~lIro(/,~)r (deterrrtii~i~~g ils slca4-slate performance cot(/ rltr rljrrcrrrric slifj51r.v~ cord d(~otrpirig co(II/ficients. TI(ese coefficirrtl.~ of /Ir(~,filttr it!flrrorct~ tit(! re.spoitsr! of tlrc .slrrrfi-bectring system. Prr:fi~rrtrrrr~cr (Itlo h n v~ brrtt cottr/)uted for o,filrr-pockct Oenriiig o j LIL) = 1 .O, roillt vnriorts orqice rirsipr parc~rrreters a i d ecceiitricity r.nlio.s. For sln/)i/ilj .slrcdirs, critirrr/ ~n m s for the lii~enrizrd syste~tl Itcrs brrrr drtrrtrtiiied 19 liorr/lr~s criterioir. By n'iscretiziizg lirrrr n~t d rtsi,trg /lrp Rrorgv-Kr~ll~t ttr(~tho(1, rnotiorr trNjectori(!s of ~I I P ~O I I W I ( I I rrrrlpr ~( I V P OPPII /h~orelic(~lly ( i~~t e r ) n i i~~~I for (I. small arbitrary itiiticrl rlislri r1)orrcr.

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