Shell/MIT

These equations are primarily used for calculating pressure drops and flow rates. However, a modified Reynolds number must be used. When calculating flow rate or internal pipe diameter, a modified Reynolds number must be calculated first using the up or down stream calculations to run these calculations. No internal roughness considered.
Flow Rate
PTLB Hydraulics Liquid 2.6 Intro.png
 
Upstream Pressure
PTLB Hydraulics Liquid 2.6 Intro_2.png
 
Downstream Pressure
PTLB Hydraulics Liquid 2.6 Intro_3.png
 
Internal Diameterย 
PTLB Hydraulics Liquid 2.6 Intro_4.png

Reynolds Number and Modified Reynolds Number
PTLB Hydraulics Liquid 2.6 Intro_5.png

๐‘…๐‘’๐‘€ย โˆ’ Modified Reynolds Number
Re โˆ’ Reynolds Number
๐พ๐‘‰ย โˆ’ Kinematic Viscosity[ft2/sec]
๐ป1ย โˆ’ Upstream Elevation[ft]
๐ป2ย โˆ’ Downstream Elevation[ft]
๐ต โˆ’ Flow Rate[ft/sec]
๐ทโˆ’Pipe Internal Diameter[in]
๐ฟ โˆ’ Pipeline Length[mi]
๐บ โˆ’ Liquid Specific Gravity
โˆ†๐‘ƒ โˆ’ Pressure Drop[psi]
๐‘ƒ1ย โˆ’ Upstream Pressure[psi]
๐‘ƒ2ย โˆ’ Downstream Pressure[psi]

Input Parameters

  1. To create a new case, click the โ€œAdd Caseโ€ button
  2. Select the Unknown and desired Flow Equation.
  3. Enter Case Name, Location, Date and any necessary notes.
  4. Fill out all required fields.
  5. Make sure the values you are inputting are in the correct units.
  6. Click the CALCULATE button.

  • Flowing Temperature(ยฐF)
  • Liquid Specific Gravity
  • Upstream Pressure(psig)
  • Flow Rate(MCFD)
  • Internal Pipe Diameter(in)
  • Kinematic Viscosity
  • Length of Pipeline(mi)
  • Upstream Elevation(ft)
  • Downstream Elevation(ft)
 

Outputs/Reports

  1. View the results.
  2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
  3. To SAVE, fill out all required case details then click the SAVE button.
  4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
  5. To generate a REPORT, click the REPORT button.
  6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
  7. To delete a case, click the DELETE icon near the top of the widget.

  • Flow Rate(ft/sec.)
  • Pressure Drop [psi/mi]
  • Calculated modified Reynolds Number
  • Upstream Pressure(psi)
  • Downstream Pressure(psi)
  • Internal Pipe Diameter(in)
Flow Rate
PLTB Hydraulics-Liquid 2.6_Output Flow Rate Revision_07232020.png
 
Upstream Pressure
PLTB Hydraulics-Liquid 2.6_Output Upstream Revision_07232020.png    
Downstream Pressure
PLTB Hydraulics-Liquid 2.6_Output Downstream Revision_07232020.png    
Internal Pipe Diameterย 
PLTB Hydraulics-Liquid 2.6_Output IPD Revision_07232020.png

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