Kodi ndi mfundo iti yoyezera yomwe vortex flowmeter imagwiritsa ntchito?

Ma Vortex flowmeters amagwira ntchito motsatira mfundo ya Karman Vortex Street.
Chotsukira madzi chokhazikika (chotsukira madzi chozungulira) chimayikidwa pakati pa chubu choyezera. Madzi (madzimadzi, mpweya kapena nthunzi) akadutsa chopinga ichi, madziwo amalekanitsidwa mbali zonse ziwiri za chotsukira madzi. Ma vortex okhazikika, osinthasintha nthawi zonse amatuluka kuchokera mbali ziwirizo pafupipafupi yokhazikika, ndikupanga mizere yambiri ya vortex yotchedwa Karman vortex street.
Kuchuluka kwa ma vortex leating kuli ndi ubale wofanana ndi wapakati pa liwiro la madzi mkati mwa nambala inayake ya Reynolds. Kuchuluka kwa liwiro la madzi, komwe kumawonjezera kuchuluka kwa ma vortex shedding.
Masensa a piezoelectric omangidwa mkati mwake amazindikira zizindikiro zazing'ono za pressure pulse zomwe zimapangidwa pamene vortex iliyonse ikugunda chinthu chozindikira. Chosinthira chimakulitsa, kusefa ndikugwiritsa ntchito zizindikiro za pulse izi, kenako chimasandutsa chizindikiro cha frequency kukhala instantaneous flow rate ndi cumulative total flow volume.
Popeza mulibe zida zozungulira kapena zosunthika mkati mwa mita, mavuto okhumudwitsidwa ndi kutsekeka kwa makina amapewedwa, zomwe zimapangitsa kuti kuyeza kwake kukhale kokhazikika kwa nthawi yayitali.