WOLF ENERGY SA
/

Engineering & Technology

# REGULATION VALVES

## MAIN FEATURES

• Selection of an unlimited number of valves for each analysis
• Description of each valve through data supplied from manufacturers (e.g. diameter, coefficient of contraction, coefficient of velocity, range of operation, etc.)
• Computation of characteristic curves (i.e. loss coefficient versus valve opening, head loss versus valve opening for any given discharge, head loss versus discharge for any given valve opening) according to hydraulic laws
• Identification of various flow contributions (contraction, expansion, etc.) and suitable working conditions (i.e. velocities are to be kept between the limits provided by constructors)
• Comparison of analytical results with original data from manufactures (e.g. head loss versus discharge, etc.)
• Visualisation of results
• Suitable for designing and testing

## OPTIONS FOR IO OPERATIONS

• Microsoft Excel Spreadsheet Files (xlsx)

## OPTIONS FOR GRAPHICS

• Standard Image Formats (jpeg, tiff)
• Portable Document Format (pdf)

## TEST CASES

Figure 1, Figure 2 and Figure 3 show the influence of valve opening on the loss coefficients, given the coefficient of contraction and the coefficient of velocity. Figure 4 illustrates head loss versus valve opening for given discharges while Figure 5 compares head loss versus discharge for given valve openings.

Figure 1. Loss coefficients (Y-Axis) versus valve opening (X-Axis) with C_C = 0.40 and C_V = 0.95.

Figure 2. Loss coefficients (Y-Axis) versus valve opening (X-Axis) with C_C = 0.60 and C_V = 0.95.

Figure 3. Loss coefficients (Y-Axis) versus valve opening (X-Axis) with C_C = 0.80 and C_V = 0.95.

Figure 4. Head loss (Y-Axis) versus valve opening (X-Axis) for given discharges.

Figure 5. Head loss (Y-Axis) versus discharge (X-Axis) for given valve openings.

## DELIVERABLES

 User's Manual PDF