Koj puas paub dab tsi anemometers siv rau
Lub hauv paus ntsiab lus ntawm lub anemometer yog muab cov hlau nyias nyias rau hauv cov kua dej thiab ua kom sov cov hlau nrog cov hluav taws xob tam sim no kom nws qhov kub thiab txias siab tshaj qhov kub ntawm cov kua. Yog li ntawd, ib tug hlau hlau anemometer yog hu ua "kub hlau". Thaum cov kua dej ntws los ntawm cov hlau xaim nyob rau hauv ib txoj kab ntsug, nws yuav tshem tawm qee qhov cua sov los ntawm cov hlau, ua rau qhov kub ntawm cov hlau yuav txo.
Lub hom phiaj ntawm anemometer yog:
1. Ntsuas qhov nruab nrab qhov nrawm thiab kev taw qhia ntawm ntws.
2. Ntsuas qhov nrawm nrawm ntawm cov khoom ntws thiab nws cov spectrum.
3. Ntsuas qhov Reynolds kev ntxhov siab nyob rau hauv turbulence thiab lub nrawm thiab lub sij hawm correlation ntawm ob lub ntsiab lus.
4. Ntsuas phab ntsa shear kev ntxhov siab (feem ntau yog siv cov yeeb yaj kiab kub sojntsuam tso dej yaug nrog cov phab ntsa, zoo ib yam li lub hauv paus ntsiab lus ntawm kev ntsuas kub xov hluav taws xob).
5. Ntsuas cov kua dej kub (los ntawm kev ntsuas qhov hloov nkhaus ntawm kev sojntsuam tsis kam nrog cov dej kub ua ntej, thiab tom qab ntawd txiav txim siab qhov ntsuas kub raws li qhov ntsuas qhov ntsuas tsis kam).
Taw qhia rau kev faib cov anemometers
1. Cua khob anemometer
Nws yog hom anemometer feem ntau. Lub anemometer teb yog thawj zaug tsim los ntawm Robinson hauv Askiv, nrog plaub khob thaum lub sijhawm thiab tom qab ntawd hloov mus rau peb khob. Peb lub khob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Nyob rau hauv qhov kev txiav txim ntawm cua, lub khob cua rotates nyob ib ncig ntawm nws axis, thiab nws ceev yog proportional rau cua ceev. Qhov ceev tuaj yeem kaw tau siv cov hluav taws xob tiv tauj, ntsuas ntsuas lub tshuab hluav taws xob, lossis cov txee photoelectric.
2. Propeller anemometer
Nws yog ib qho anemometer nrog ib txheej ntawm peb lossis plaub lub ntsej muag rotating ib ncig ntawm kab rov tav axis. Lub kiv cua yog ntsia rau pem hauv ntej ntawm ib tug cua vane, yog li ntawd nws rotating dav hlau yog ib txwm tig mus rau cov kev taw qhia ntawm cov cua nkag, thiab nws ceev yog proportional rau cov cua ceev.
3. Kub hlau anemometer
Ib tug hlau hlau rhuab los ntawm ib tug hluav taws xob tam sim no dissipated los ntawm cov cua ntws. Lub tshav kub dissipation tus nqi yog linearly hais txog lub hauv paus square ntawm cua ceev, thiab ces linearized los ntawm ib tug hluav taws xob Circuit Court (kom yooj yim calibration thiab nyeem ntawv) los tsim ib tug kub hlau anemometer. Muaj ob hom kev ntsuas kub cua kub ceev: sab cua sov thiab cua sov ncaj qha. Ib sab cua kub kub hlau feem ntau yog ua los ntawm manganese tooj liab hlau, nrog rau qhov kub thiab txias coefficient ze rau xoom. Nws tseem yog nruab nrog lub ntsuas kub ntsuas ntawm nws qhov chaw. Direct cua kub xov hlau yog feem ntau platinum xov hlau, uas tuaj yeem ntsuas qhov kub ntawm cov hlau kub nws tus kheej thaum ntsuas cua ceev. Hotwire anemometers muaj qhov rhiab heev ntawm qhov cua qis thiab tsim nyog rau kev ntsuas cua me me. Nws lub sij hawm tas li tsuas yog ob peb feem pua ntawm ib thib ob, ua rau nws yog ib qho cuab yeej tseem ceeb rau huab cua turbulence thiab kev ntsuas huab cua ua liaj ua teb.
