Gịnị bụ shiee nkwụsi ike nke mmanụ?

Gịnị bụ shiee nkwụsi ike nke mmanụ?

Tulee ndetu mmanu mmanu mmanu na oke nke otutu, taa anyi ga-ekwu okwu / nkwụsi ike, ọ bụ nnọchite anya mmanụ nke akụkụ nke okike? Ụbọchị steeti kọwapụtara gị nke ọma.

Gịnị bụ ịkpụ? Tupu ihe dị ka [shear nkwụsi ike], anyị ga-abụ ndị mbụ na-ewebata echiche/shia na shiee bụ okwu nke ije. N'ime mfe iru nke kpọmkwem na-ezo aka: na ụzọ abụọ nke otu nha, na-atụ aka na-emegide mpụta ike (ntụgharị, perpendicular na ọrụ nke ike), ihe nke cross ngalaba tinyere ntụziaka nke mpụga ike nke ikwu faulting. na nrụrụ onu.

Na ilele mbụ ụfọdụ nkịtị, ma biko gosi: deformation shiee ike mmeghachi omume nke mmanụ na mmanụ, na-ezo aka mmanụ ụmụ irighiri n'okpuru elu okpomọkụ na elu nrụgide, n'ihi na nrụgide na shiee nchegbu nke mmanụ molekul na-agbajikwa na deformation, na-emetụta viscosity nke mmanụ n'onwe ya.

Shiee kwụsie ike, n'ihu nghọta nke abụọ echiche, ka eze ka shiee kwụsie ike a definition: shiee kwụsie ike bụ nnọchiteanya nke a lubricating mmanụ n'okpuru n'ibu shiee, ọdịdị nke RCC nwere ike ịnọgide na-ụkwụ viscosity.

Ezigbo nkwụsi ike shiee, mmanụ mmanye nwere ike kwụsie ike na viscosity igwe shiee, jiri okirikiri, mmetụta mmanụ mmanụ na-esikwu ike. Nkwụsi ike nke shear, viscosity mmanụ mmanụ na-ebelata n'ihi ịkwa akwa. N'uche, bụ mmanụ na-ebelata.

Mkpebi: nkwụsi ike nke shear dị mma ma ọ bụ dị njọ, ga-emetụta mmetụta eji mmanụ eme ihe n'okpuru nnukwu okpomọkụ na nrụgide dị elu, yana ndụ ọrụ dị irè nke mmanụ engine.

Otu esi emeziwanye nkwụsi ike nke shear iji meziwanye nkwụsi ike nke mmanụ, a ga-agbakwunye ndị ọkà mmụta sayensị na mmanụ viscosity index enhancer, nke a bụ ụdị polymer mmetụta okpomọkụ.

Na elu okpomọkụ, ya molekụla yinye agbatị, esemokwu mmụba nke isi mmanụ, mmanụ mmiri mmiri igbochi mmetụta, ya bụ viscosity mmụba, mmanu viscosity belatara ruo n'ókè ụfọdụ.

N'ozuzu, n'ihi na mgbe niile iterative mmanụ usoro, free ekenye ngụkọta njikọ nke mmanụ nwere ihe ọzọ uru na shiee kwụsie ike.