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א א א א F F E ١٦٢ ١٦٢

أساسيات قدرة الموائع عملي

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  1. 1. FFEE
  2. 2. FE W K K ?FE?? ? K K K
  3. 3. FE K K K
  4. 4. FE W E K E W K WK WK W K K EK
  5. 5. JJ
  6. 6. FE -- UnitsW W international system units ( SI ) W (SI )UnitQuantity (Symbol) 2 m Area A m/secVelocity v 3 m Total volume V m Diameter D N Force F sec 3 m Volume flow rate Q 3 m kg Density secm kg Dynamic viscosity sec 2 m Kinematic viscosity m Perimeter (Symbol)(SI )Unit Quantity mmeter Length kg kilogrammass ssecond time kKelvin temperature
  7. 7. FE -- J J J Reynolds number Re J J J Friction factor f m Friction head losses fh Pa Shear stress W K F( Density W gw = W V m = w Eg2 sec 8.9 m g =K EmK EVK FviscosityE KK K K U yAF FEK
  8. 8. FE -- FWE F W A F = Uy W dy du W dy du = KW dy du =
  9. 9. FE -- FKEFKFESecpa m SecN .2 = =E W = F sec 2 m E K K K FE K
  10. 10. FE -- FEFE
  11. 11. FE -- K K K FEK FEW
  12. 12. FE -- K W dy du A F == KFE K FEW
  13. 13. FE -- FCompressibilityE KK FWaterhammeringEK Elastic energy)E K FRigidE FEK FEW
  14. 14. JJ
  15. 15. FE -- W K W A FK v K W F JE F JE K rl F JEF= r v 6 F JEW F JE rvF 6= y v AF y v AF =
  16. 16. FE -- F JE F JEW JW F JE s g JW F JEgrF l 3 2 3 4 = l J W F JE grF s 3 1 3 4 = rF 63 =
  17. 17. FE -- W F JE F JEW F JE ( )g v r ls = 2 9 2 FFKE Pa. sec )E rmK s3 m kg K l3 m kg K Sec m K g2 8.9 Sec m g =K rgrgr FFF ls 6 3 4 3 4 33 321 += +=
  18. 18. FE -- W F JEW F JEW K
  19. 19. FE -- F JE V M = MK VK F JE F JEK W J K J K J K J F JEK J K J t d =dFABEt dK JFEK JF JKE
  20. 20. FE -- J 2 r F JEW = 2 r Slope m/sec sec m2 m m m 1 2 3 4 6 7 8 F JE WdK JW ( )g v r ls = 2 9 2
  21. 21. FE -- F JWE
  22. 22. FE -- W J J J J W JK Jcm0.253 /2.1 mkg 8.3 pa.secZ 89 gm/cm3 K aE bE cE dEpa.sec0.72bar.min eE280km/hrm/sec
  23. 23. JJ
  24. 24. FE W K W K rv r rW F JErwv = wr W F JE wK F JE( ) wrw dr d dr dv == ( ) w dr dw rrw dr d dr dv +==
  25. 25. FE W F JEw dr dw r dr dv += dr dw r W F JE FK K AK r W F JE ( ) dr dw LrrF 2= W F JE ( ) dr dw LrG dr dw LrrG 3 2 2 2 = = LK dr dw ArF =
  26. 26. FE W F JE Transducer BrookfieldF JEK SPRING TOQUEMODEL 673.7 dyne cm 0.0637 mill mLV DV II+ 1 7187 dyne cm 0.7187 mill - mRV DV II+2 14374 dyne cm 1.4374 mill - mHA DV II+3 57496 dyne cm 5.7496 mill mHB DV II+ 4 F JEW CGSSIW J(Cent poise)( mpa.sec )K J 2 Cm d 2 m N K J Sec 1 K Jd.cm)E( )mN K J0 C0 FK
  27. 27. FE F JEW
  28. 28. FE W JW K JW K K K F JEW
  29. 29. FE JW F JEK F JEW F JEW
  30. 30. FE F JEW F JWE Up arrow K Down arrow K Motor ON/OFF/Escape K
  31. 31. FE speedSet K Select display W JFcP or mPa.secKE J 2 Cm d 2 m N K J Sec 1 K Enter/Auto range K Select spindle K Print K
  32. 32. FE Options / Tap K
  33. 33. FE Options Menu Setup Temperature --- F or C Units --- CGS OR SI Speed Sets --- Sequential, Interleave, Custom Printer Port --- Serial (RS232) OR Parallel Data A Verging --- Display Only * Time to stop * Time to Torque Set Print time: Set the printing time PC Prog (ON/OFF) : Enables / Disables Communication of Serial (RS 232) port * Download A program: Link to PC to Receive a B. E.V.I.S. program (B. E.V.I.S . = Brookfield Engineering Viscometer Instruction Set ) * Run A program: Execute a B. E.V.I.S . Program. * Not available when motor is ON
  34. 34. FE FDV II+E W FRVEFDV II+EFRVEFLVKE W W W W . 0C or 0F FcP or mPa.secKE
  35. 35. FE F JKE F JEW W JK J K JK JK J K
  36. 36. FE J K J F JKE JF JEK F JE (r.p.m) Fmpa.secEF0CE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16
  37. 37. FE W G K W K K K
  38. 38. FE W JF JE J W J JW TF JE
  39. 39. JJ