पाइप के प्रवेश द्वार पर होने वाले हेड ह्रास (hi) को किस प्रकार व्यक्त किया जाता है? (जहाँ V पाइप में द्रव का वेग है और g गुरुत्वाकर्षण के कारण त्वरण है)

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  1. \(\rm h_i=\frac{v^2}{2g}\)
  2. \(\rm h_i=0.5\frac{v^2}{2g}\)
  3. \(\rm h_i=\frac{v^2}{3g}\)
  4. \(\rm h_i=\frac{v^2}{g}\)

Answer (Detailed Solution Below)

Option 2 : \(\rm h_i=0.5\frac{v^2}{2g}\)
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संप्रत्यय:

सूक्ष्म हानियाँ वाल्व, मोड़, और अन्य फिटिंग जैसे उपकरणों की स्थापना के कारण प्रवाह के बाधा के कारण होती हैं।

विभिन्न हानियाँ इस प्रकार दी गई हैं:

1). अचानक विस्तार हानि:

\({\left( {{h_L}} \right)_{exp}} = \frac{{{{\left( {{v_1} - {v_2}} \right)}^2}}}{{2g}}\)

2). निर्गम हानि:

\({\left( {{h_L}} \right)_{exit}} = \frac{{v^2}}{{2g}}\)

3). प्रवेश हानि:

\({\left( {{h_L}} \right)_{ent}} = \frac{{0.5 \;×\; v^2}}{{2g}}\)

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