{"id":708208,"date":"2024-08-20T21:31:04","date_gmt":"2024-08-20T20:31:04","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=708208"},"modified":"2024-08-20T21:31:04","modified_gmt":"2024-08-20T20:31:04","slug":"giai-thich-nguyen-ly-bernoulli","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/giai-thich-nguyen-ly-bernoulli\/","title":{"rendered":"Gi\u1ea3i Th\u00edch Nguy\u00ean L\u00fd Bernoulli"},"content":{"rendered":"

Nguy\u00ean l\u00fd Bernoulli trong nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc: gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng trong ch\u1ea5t l\u1ecfng thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/p>\n

\"Gi\u1ea3i<\/p>\n

Gi\u1ea3i Th\u00edch Nguy\u00ean L\u00fd Bernoulli<\/h2>\n

Nguy\u00ean l\u00fd Bernoulli l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng, \u0111\u01b0\u1ee3c \u0111\u1eb7t theo t\u00ean nh\u00e0 to\u00e1n h\u1ecdc v\u00e0 nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Th\u1ee5y S\u0129 Daniel Bernoulli. Nguy\u00ean l\u00fd n\u00e0y ph\u00e1t bi\u1ec3u r\u1eb1ng t\u1ed5ng c\u1ee7a \u00e1p su\u1ea5t t\u0129nh, \u0111\u1ed9ng n\u0103ng v\u00e0 th\u1ebf n\u0103ng c\u1ee7a ch\u1ea5t l\u1ecfng trong m\u1ed9t d\u00f2ng ch\u1ea3y kh\u00f4ng thay \u0111\u1ed5i d\u1ecdc theo m\u1ed9t d\u00f2ng ch\u1ea3y l\u00ed t\u01b0\u1edfng.<\/p>\n

<\/p>\n

  • \u00c1p su\u1ea5t t\u0129nh (\\(P\\))<\/li>\n
  • \u0110\u1ed9ng n\u0103ng (\\(\\frac{1}{2} \\rho v^2\\))<\/li>\n
  • Th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng (\\(\\rho gh\\))<\/li>\n

    <\/u1><\/p>\n

    Trong \u0111\u00f3:<\/p>\n

    <\/p>\n

  • \\(P\\) l\u00e0 \u00e1p su\u1ea5t c\u1ee7a ch\u1ea5t l\u1ecfng<\/li>\n
  • \\(\\rho\\) l\u00e0 m\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng<\/li>\n
  • \\(v\\) l\u00e0 v\u1eadn t\u1ed1c c\u1ee7a ch\u1ea5t l\u1ecfng<\/li>\n
  • \\(g\\) l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng<\/li>\n
  • \\(h\\) l\u00e0 chi\u1ec1u cao so v\u1edbi m\u1ed1c tham chi\u1ebfu<\/li>\n

    <\/u1><\/p>\n

    Ph\u01b0\u01a1ng tr\u00ecnh Bernoulli cho d\u00f2ng ch\u1ea3y kh\u00f4ng n\u00e9n \u0111\u01b0\u1ee3c ph\u00e1t bi\u1ec3u nh\u01b0 sau:<\/p>\n

    \\(P + \\frac{1}{2} \\rho v^2 + \\rho gh = h\u1eb1ng s\u1ed1\\)<\/strong><\/p>\n

    \u1ee8ng D\u1ee5ng C\u1ee7a Nguy\u00ean L\u00fd Bernoulli<\/h2>\n

    Nguy\u00ean l\u00fd Bernoulli c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong c\u1ea3 \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y l\u1eabn trong k\u1ef9 thu\u1eadt v\u00e0 c\u00f4ng nghi\u1ec7p. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i v\u00ed d\u1ee5:<\/p>\n

    <\/p>\n

  • \u1ed0ng v\u00f2i n\u01b0\u1edbc:<\/strong> Khi n\u01b0\u1edbc ch\u1ea3y qua m\u1ed9t khu v\u1ef1c h\u1eb9p c\u1ee7a \u1ed1ng, v\u1eadn t\u1ed1c c\u1ee7a n\u00f3 t\u0103ng l\u00ean v\u00e0 \u00e1p su\u1ea5t gi\u1ea3m, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y.<\/li>\n
  • C\u00e1nh m\u00e1y bay:<\/strong> H\u00ecnh d\u1ea1ng c\u1ee7a c\u00e1nh m\u00e1y bay \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf sao cho kh\u00f4ng kh\u00ed di chuy\u1ec3n nhanh h\u01a1n tr\u00ean b\u1ec1 m\u1eb7t tr\u00ean c\u1ee7a c\u00e1nh, t\u1ea1o ra l\u1ef1c n\u00e2ng do \u00e1p su\u1ea5t th\u1ea5p h\u01a1n.<\/li>\n
  • L\u01b0u l\u01b0\u1ee3ng k\u1ebf Venturi:<\/strong> D\u1ee5ng c\u1ee5 n\u00e0y s\u1eed d\u1ee5ng nguy\u00ean l\u00fd Bernoulli \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng th\u00f4ng qua s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t khi ch\u1ea5t l\u1ecfng \u0111i qua m\u1ed9t \u1ed1ng h\u1eb9p.<\/li>\n

    <\/u1><\/p>\n

    K\u1ebft Lu\u1eadn<\/h2>\n

    Nguy\u00ean l\u00fd Bernoulli cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 h\u00e0nh vi c\u1ee7a ch\u1ea5t l\u1ecfng trong d\u00f2ng ch\u1ea3y v\u00e0 c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd n\u00e0y c\u00f3 th\u1ec3 gi\u00fap ta gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c nhi\u1ec1u hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean v\u00e0 k\u1ef9 thu\u1eadt trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Nguy\u00ean l\u00fd Bernoulli trong nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc: gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng trong ch\u1ea5t l\u1ecfng thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/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":"\nGi\u1ea3i Th\u00edch Nguy\u00ean L\u00fd Bernoulli<\/title>\n<meta name=\"description\" content=\"Nguy\u00ean l\u00fd Bernoulli trong nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc: gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng trong ch\u1ea5t l\u1ecfng thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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