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3) ½ÇÇè ¸û
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, ¿¤º¸¿ì ¹× ¸éÀû½Ä À¯·®°è¸¦ ÀÌ¿ëÇÏ¿© º£¸£´©ÀÌ(bernoulli)¹æÁ¤½Ä¿¡ ÀÇÇÑ ÀÌ·ÐÀû Àû¿ë ¹× À¯·®ÃøÁ¤ ½ÇÇèÀ» ÇÑ´Ù.
4) °ü·ÃÀÌ·Ð
1) venturi meter
±×¸² 5.4´Â À¯·®ÃøÁ¤°èÀÎ º¥Ãò¸® ¸ÞŸ·Î¼ ¾Ð·Â Â÷¸¦
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±×¸² 5.4¿¡¼ 1, 2Á¡ÀÇ À¯µ¿À¯Ã¼°¡ ºñ¾ÐÃ༺ À¯Ã¼
ÀÏ °æ¿ì º£¸£´©ÀÌ ¹æÁ¤½Ä¿¡¼
{v {1} ^{2}} over {2g} {p {1}
} over {gamma } z {1} {v {2} ^{2}} over {2g} {p {2}} over {gamma } z {2}
¿¬¼Ó ¹æÁ¤½Ä¿¡¼
a {1} v {1} a {2} v {2}
v {2} sqrt {{2g delta h} over
{1-(d {2} /d {1} ) ^{4}}} `````````````(m/s)
q {2} a {2} v {2} {pi d {2} ^
{2}} over {4} sqrt {{2g delta h} over {1-(d {2} /d {1} ) ^{4}}} ```````(m ^{3} /s)
µû¶ó¼, º¥Ãò¸®ÀÇ À¯·®Àº
q {v} c {v} q {2} cv {pi d {2
} ^{2}} over {4} sqrt {{2g delta h} over {1-(d {2} /d {1} ) ^{4}}} ````````````(m ^{3} /s)
(5.10)
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q {v} :`º¥Ãò¸®ÀÇ`½ÇÁ¦À¯·®(m ^{3} /s)`
``````````q {2`} `:`ÀÌ·Ð`À¯·®`(m ^{3} /s)`````v``:Æò±Õ`¼Óµµ(m/s)# d {1} `:`ÃÖ´ë`Á÷°æ`(m)`````````````````````````````````````````````````````d {2`} `:`ÃÖ¼Ò`Á÷°æ(m)`````````````````` varupsilon `:`¹°ÀÇ`ºñÁß# delta h`:`¸¶³ë¸ÞÅÍ`Â÷¾Ð(m)````````````````````````````````````c {v} `:`À¯·®°è¼ö(0.98)
2) ±ÞÈ®´ë°ü(sudden expansion) (ÀÌÇÏ »ý·«)
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