Architecture
°ÇÃà Architecture


º¥Ãò¸®¹ÌÅÍ(venturi meter), À¯¼Ó(velocity) ±¸Çϱâ, Á÷°æ(diameter)°ú ¹Ðµµ(density) ÀÌ¿ë

ÀÛ¼ºÀÚ Uploader : milinae ÀÛ¼ºÀÏ Upload Date: 2022-06-11º¯°æÀÏ Update Date: 2022-06-11Á¶È¸¼ö View : 331

±×¸²°ú °°Àº º¥Ãò¸®¹ÌÅÍ¿¡¼­ ¾×ÁÖ°èÀÇ ³ôÀÌÂ÷ h (m) ¸¦ ÀÌ¿ëÇÏ¿© 2 ¹ø ´Ü¸é¿¡¼­ÀÇ Æò±ÕÀ¯¼Ó V2 (m/s) ¸¦ ±¸ÇÑ´Ù.

°¢ ´Ü¸éÀÇ Æò±ÕÀ¯¼ÓÀ» V1, V2 (m/s) ¶óÇÏ°í, 1¹ø ÁöÁ¡°ú 2¹ø ÁöÁ¡¿¡ ´ëÇÏ¿© º£¸£´©ÀÌ ¹æÁ¤½ÄÀ» Àû¿ëÇϸé, ´ÙÀ½°ú °°´Ù.

(¥ñ/2)V1^2 + P1 = (¥ñ/2)V2^2 + P2

(¥ñ/2)V2^2 = (¥ñ/2)V1^2 + P1 - P2

V2^2 - V1^2 = (2/¥ñ)(P1-P2)

¿©±â¼­, ¥ñ ´Â À¯Ã¼ÀÇ ¹Ðµµ (kg/m^3), P1, P2 ´Â °¢ ÁöÁ¡ÀÇ ¾Ð·Â (Pa) ÀÌ´Ù.

¶ÇÇÑ, °¢ ´Ü¸é¿¡¼­ÀÇ ¸éÀûÀ» A1, A2 (m^2) À̶óÇϸé, ¿¬¼Ó¹æÁ¤½ÄÀ¸·Î ºÎÅÍ,

V1 = (A2/A1)V2

À̹ǷÎ,

V2^2 - ((A2/A1)V2)^2 = (2/¥ñ)(P1-P2)

V2^2 (1-(A2/A1)^2) = (2/¥ñ)(P1-P2)

ÀÌ°í, P1-P2 = (¥ñm-¥ñ)gh À̹ǷÎ, ¥ñm : ¾×ÁÖ°è ³»ÀÇ ¾×üÀÇ ¹Ðµµ(¥ñ<¥ñm)

V2^2 = (2/¥ñ)(¥ñm-¥ñ)gh/(1-(A2/A1)^2)

V2 = sqr((2/¥ñ)(¥ñm-¥ñ)gh/(1-(A2/A1)^2))

ÀÌ µÈ´Ù.

Á÷°æÀÌ D1, D2 (m) ÀÎ ¿øÇü°üÀÎ °æ¿ì¿¡´Â,

A2/A1 = (¥ð/4)D2^2/(¥ð/4)D1^2 = (D2/D1)^2

À̹ǷÎ,

V2 = sqr((2/¥ñ)(¥ñm-¥ñ)gh/(1-(D2/D1)^4))

ÀÌ µÈ´Ù.

*** Âü°í¹®Çå[References] ***

V2 = sqr(2*(¥ñm-¥ñ)*g*h/(¥ñ*(1-(D2/D1)^4)))
º¯¼ö¸í Variable º¯¼ö°ª Value º¯ ¼ö ¼³ ¸í Description of the variable


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