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Creating Models in Sinaps
Figure 5-37 shows the type-specific edit form for a COMPPD device. Descriptions of each input are described below.
For detailed information on describing compressors, torque, heating, and other advanced options, please refer to section 3.5.17 of the SINDA/FLUINT User’s Manual.
Note: The Basic Data tab has an option to “Use 5.3 Type Specific Data”. The COMPPD form
has been redesigned in version 5.4 to provide increased “user friendliness”, assisting the
user in determining which inputs are required and providing access to Sinaps Tables for
array data input. When a 5.3 or older model is opened, the “Use 5.3 Type Specific Data”
option will be checked and the Type Specific Data tab content will appear has the heritage
style input form. The user may continue using the heritage form however it is recommended to update to the new form by unchecking the box. Be aware that when updating
to the new form, some data (such as performance curves) will need to be reinput. For
information on the heritage style form please see “Heritage Positive Displacement Compressor Form” on page A-11.
COMPPD General Tab. Data input on the General Tab applies to all positive displacement compressors regardless
of the input method. For additional information, see “Positive Displacement Compressor Device (COMPPD)” on
page 5-91.
FIGURE 5-37.
COMPPD Type Specific General Form
Input Method - A COMPPD device can be defined as either a “Simple, single curve of Volumetric Efficiency vs. Speed
(AEFFV method)” using a single curve to defined volumetric efficiency as a function of rotational speed, or a “Fully
Mapped of Volumetric Efficiency vs. Pressure Ratio (ELISTV method)” which uses a family of curves to define the
volumetric efficiency as a function of the pressure ratio at various speeds. The input method selection controls the content of the Vol. Efficiency vs Pressure Ratio tab allowing only applicable data fields to be displayed.
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Sinaps User’s Manual, C&R Technologies, Inc.