Heltzel

One of the oldest equations is which is still being used for Reynolds values in the range of Re = 4,000 to 57,600. This equation is limited to laminar flow only. Other limitations include velocity changes and larger diameters.
 
Flow Rate
PTLB Hydraulics Liquid 2.4 Intro.png
 
Upstream Pressure
PTLB Hydraulics Liquid 2.4 Intro_2.png
 
Downstream Pressure
PTLB Hydraulics Liquid 2.4 Intro_3.png
 
Internal Diameter
PTLB Hydraulics Liquid 2.4 Intro_4.png
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 base(ยฐF)
  • Liquid Specific Gravity
  • Upstream Pressure(psig)
  • Downstream Pressure
  • Kinematic Viscosity
  • Internal Pipe Diameter(in)
  • 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.)
  • Upstream Pressure(psi)
  • Downstream Pressure(psi)
  • Internal Pipe Diameter(in)
  • Pressure Drop [psi/mi]
Flow Rate
PLTB Hydraulics-Liquid 2.4_Output Flow Rate Revision_07232020.png  
Upstream Pressure
PLTB Hydraulics-Liquid 2.4_Output Upstream_Revision_07232020.png
 
Downstream Pressure
PLTB Hydraulics-Liquid 2.4_Output Downstream_Revision_07232020.png  
Internal Pipe Diameterย 
PLTB Hydraulics-Liquid 2.4_Output IPD_Revision_07232020.png

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