A Cavitation Susceptibility Meter With Optical Cavitation Monitoring - Part One : Design Concepts
نویسنده
چکیده
This work is concerned with the design of a Cavitufion Susceptibility Metef bused on the we af u uenluri tube for ihe measurement of the aciiuc cavllalion nuclei cuncentrarion in water ,smp/es as a f&nclim of the appii~d tension. The operation uf the Cuur'tarlun Strsceplibilify Meter is anui~zedand the muin consideralions Ieadinp to the proposed design are illustruted and criiicalIy discussed The results of this analysis indicate that ttze operational range b mainly limited by nuclei i~tterfmnce, flow sepuration and saturation (choA'i?rg), and suggesr to dmelup a Cavirufivn Susceptibility Meter where: ( a ) the f'(owpo$$essm a laminar putenlid core rhrclughout the vellturi rhrorrr secrlon m #I1 ~peraiW?tnl condirionsi (b) the pressure at the uenluri throat is determined from thc rrpstrcarn pressure and the Ioci~l.fluw ueludty; ( c ) rhe detediun ufcauitalion md the mei?surerfit?nt ofthe flow velocity are carried oul uplicdiy by mwnsclf a LuserDopIer Veiocimeter; ((d) a custorn-made dtx81ronic Signal Processor incorporatmg a frequency counter is used for real m e sfaka generatr~n and tmporary storage; ( e ) a campuleriqcd sysfenz perform the frnal (reyuhilinn and reduction of the dam
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