Imiphumela yomoya ibaluleke kakhulu ekukhetheni okulungilelayisha umthamo wenzwa yeselikanye nokunquma ukufakwa okulungile okuzosetshenziswa kuizicelo zangaphandle. Ekuhlaziyeni, kufanele kucatshangwe ukuthi umoya ungavunguza (futhi wenze) usuka kunoma iyiphi indlela evundlile.
Lo mdwebo ubonisa umphumela womoya ethangini eliqondile. Qaphela ukuthi akukhona nje kuphela ukusabalalisa kwengcindezi ohlangothini oluvunguzayo, kodwa kukhona nokusabalalisa "okudonsa" ohlangothini lwe-leeward.
Amandla ezinhlangothini zombili zethangi ayalingana ngobukhulu kodwa aphambene ngendlela ngakho-ke awanawo umthelela ekuzinzeni okuphelele komkhumbi.
Isivinini Somoya
Isivinini somoya esiphezulu sincike endaweni, ukuphakama nezimo zendawo (izakhiwo, izindawo ezivulekile, ulwandle, njll.). I-National Meteorological Institute ingahlinzeka ngezibalo ezengeziwe zokunquma ukuthi isivinini somoya kufanele sicatshangelwe kanjani.
Bala amandla omoya
Ukufakwa kuthinteka kakhulu amandla avundlile, asebenza ekuqondeni komoya. Lawa mandla angabalwa ngokuthi:
F = 0.63 * cd * A * v2
ilapha:
cd = hudula i-coefficient, ku-cylinder eqondile, i-coefficient yokudonsa ilingana no-0.8
A = ingxenye eveziwe, elingana nobude besiqukathi * ububanzi bangaphakathi besiqukathi (m2)
h = ubude besitsha (m)
d =Imbobo yomkhumbi(m)
v = isivinini somoya (m/s)
F = Amandla akhiqizwa umoya (N)
Ngakho-ke, ku-container cylindrical eqondile, le fomula elandelayo ingasetshenziswa:
F = 0.5 * A * v2 = 0.5 * h * d * v2
Ekuphetheni
•Ukufakwa kufanele kuvimbele ukugingqika.
• Izici zomoya kufanele zicatshangelwe lapho kukhethwa umthamo we-dynamometer.
•Njengoba umoya ungaphenduki ngaso sonke isikhathi ubheke endaweni evundlile, ingxenye eqondile ingase ibangele amaphutha okulinganisa ngenxa yokushintshashintsha kwamaphoyinti anguziro. Amaphutha angaphezu kuka-1% wesisindo sensalela angenzeka kuphela emimoyeni enamandla kakhulu >7 Beaufort.
Imithelela Ekusebenzeni Kweseli Lokulayisha Nokufakwa
Umthelela womoya ezintweni zokulinganisa amandla uhlukile kumphumela wemikhumbi. Amandla omoya adala isikhashana esiphendukayo, esizosuswa umzuzu wokusabela weseli yomthwalo.
Fl = cindezela inzwa yokucindezela
Fw = amandla ngenxa yomoya
a = ibanga phakathi kwamaseli omthwalo
F*b = Fw*a
Fw = (F * b)∕a
Isikhathi sokuthumela: Oct-11-2023
