![\"Hi\u1ec7n](\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/hien_tuong_nhay_thuy_luc_va_ung_dung_cua_no.png\")
<\/p>\nHi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3: T\u00ecm hi\u1ec3u nguy\u00ean l\u00fd, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc.<\/p>\n
<\/p>\n
Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t t\u1eeb d\u00f2ng ch\u1ea3y si\u00eau t\u1edbi d\u00f2ng ch\u1ea3y d\u01b0\u1edbi. N\u00f3 th\u01b0\u1eddng x\u1ea3y ra khi n\u01b0\u1edbc chuy\u1ec3n t\u1eeb m\u1ed9t v\u00f9ng c\u00f3 v\u1eadn t\u1ed1c cao v\u00e0 chi\u1ec1u s\u00e2u nh\u1ecf sang m\u1ed9t v\u00f9ng c\u00f3 v\u1eadn t\u1ed1c th\u1ea5p v\u00e0 chi\u1ec1u s\u00e2u l\u1edbn h\u01a1n. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 quan s\u00e1t r\u00f5 r\u1ec7t t\u1ea1i c\u00e1c v\u00f9ng h\u1ea1 l\u01b0u c\u1ee7a \u0111\u1eadp n\u01b0\u1edbc, c\u1ed1ng \u0111\u1eadp ho\u1eb7c c\u00e1c con k\u00eanh d\u1eabn n\u01b0\u1edbc. Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c kh\u00f4ng ch\u1ec9 th\u00fa v\u1ecb v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft m\u00e0 c\u00f2n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong k\u1ef9 thu\u1eadt.<\/p>\n
\u0110\u1ec3 hi\u1ec3u r\u00f5 hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta c\u1ea7n hi\u1ec3u kh\u00e1i ni\u1ec7m v\u1ec1 d\u00f2ng ch\u1ea3y si\u00eau v\u00e0 d\u00f2ng ch\u1ea3y d\u01b0\u1edbi:<\/p>\n
<\/u1><\/p>\n Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c x\u1ea3y ra khi d\u00f2ng ch\u1ea3y t\u1eeb tr\u1ea1ng th\u00e1i si\u00eau chuy\u1ec3n sang tr\u1ea1ng th\u00e1i d\u01b0\u1edbi, t\u1ea1o ra m\u1ed9t v\u00f9ng chuy\u1ec3n ti\u1ebfp g\u1ecdi l\u00e0 “nh\u1ea3y th\u1ee7y l\u1ef1c”. Trong v\u00f9ng n\u00e0y, n\u01b0\u1edbc s\u1ebd nh\u1ea3y l\u00ean m\u1ed9t c\u00e1ch \u0111\u1ed9t ng\u1ed9t, t\u1ea1o ra m\u1ed9t d\u00f2ng ch\u1ea3y m\u1ea1nh v\u00e0 s\u00f3ng l\u1edbn.<\/p>\n \u0110\u1ec3 t\u00ednh to\u00e1n hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c, ta c\u1ea7n x\u00e1c \u0111\u1ecbnh chi\u1ec1u s\u00e2u tr\u01b0\u1edbc v\u00e0 sau hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y. Hai ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0:<\/p>\n <\/u1><\/p>\n Gi\u1ea3 s\u1eed \\( h_1 \\) l\u00e0 chi\u1ec1u s\u00e2u c\u1ee7a d\u00f2ng ch\u1ea3y tr\u01b0\u1edbc nh\u1ea3y v\u00e0 \\( h_2 \\) l\u00e0 chi\u1ec1u s\u00e2u c\u1ee7a d\u00f2ng ch\u1ea3y sau nh\u1ea3y, ta c\u00f3:<\/p>\n T\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 suy ra m\u1ed1i quan h\u1ec7 gi\u1eefa \\( h_1 \\) v\u00e0 \\( h_2 \\):<\/p>\n \\[ Trong \u0111\u00f3:<\/p>\n <\/u1><\/p>\n Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong k\u1ef9 thu\u1eadt, c\u1ee5 th\u1ec3 nh\u01b0:<\/p>\n <\/u1><\/p>\n Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng th\u00fa v\u1ecb trong ng\u00e0nh th\u1ee7y l\u1ef1c m\u00e0 c\u00f2n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n quan tr\u1ecdng. Hi\u1ec3u r\u00f5 hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf c\u00e1c c\u00f4ng tr\u00ecnh th\u1ee7y l\u1ee3i hi\u1ec7u qu\u1ea3 h\u01a1n, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00e1c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng kh\u1ecfi s\u1ef1 t\u00e0n ph\u00e1 c\u1ee7a d\u00f2ng ch\u1ea3y m\u1ea1nh.<\/p>\n","protected":false},"excerpt":{"rendered":" Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3: T\u00ecm hi\u1ec3u nguy\u00ean l\u00fd, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\nC\u00f4ng th\u1ee9c v\u00e0 t\u00ednh to\u00e1n<\/h2>\n
\n
\n\\frac{h_2}{h_1} = \\frac{\\frac{1}{2}\\left(\\sqrt{1 + 8F}-1\\right)}{\\sqrt{1 + 8F}-1}
\n\\]\n\u1ee8ng d\u1ee5ng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y th\u1ee7y l\u1ef1c<\/h2>\n
K\u1ebft lu\u1eadn<\/h2>\n