Compression Load Dynamics in a Special Helical Blower: A Modeling Improvement

[+] Author and Article Information
Giovanni Mimmi

Dipartimento di Meccanica Strutturale Università degli studi di Pavia Via Ferrata, 1 I-27100 Pavia, Italye-mail: mimmi@unipv.it

Paolo Pennacchi

Dipartimento di Meccanica Politecnico di Milano Via La Masa, 34 I-20158 Milano, Italye-mail: paolo.pennacchi@polimi.it

J. Mech. Des 123(3), 402-407 (Oct 01, 1999) (6 pages) doi:10.1115/1.1377016 History: Received October 01, 1999
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.


Mimmi, G., and Pennacchi, P., 1998, “Computation of Pressure Loads in the Three-Lobe Supercharger,” Proc. of DETC98: 1998 ASME Design Engineering Technical Conference, Sep. 13–16, 1998, Atlanta.
Mimmi,  G., and Pennacchi,  P., 1999, “Dynamic Loads in the Three-lobe Supercharger,” ASME J. Mech. Des., 121, pp. 602–605
Stone,  R. C., 1988, “The Efficiency of Roots Compressors and Compressors with Fixed Internal Compression,” Proc. Inst. Mech. Eng. IMechE Conf., 202, No. A3, pp. 199–205.
Mimmi,  G., and Pennacchi,  P., 1998, “Analytical Model of a Particular Type of Positive Displacement Blower,” Proc. Inst. Mech. Eng., Part C: J. Mech. Eng. Sci. 213, Part C, pp. 517–526.
Adams,  G. P., and Soedel,  W., 1995, “Computation of Compression Loads in Twin Screw Compressors,” ASME J. Mech. Des., 117, pp. 512–519.
Litvin, F. L., 1994, “Gear Geometry and Applied Theory,” Prentice-Hall, Englewood Cliffs, NJ.


Grahic Jump Location
Rotor lobe geometry on axial section
Grahic Jump Location
Rotor surfaces in 3D representation
Grahic Jump Location
Analytical definition of rotor surface and contact line determination
Grahic Jump Location
2D region frontier, integration domain for the dynamic action estimation
Grahic Jump Location
Reference scheme: blower (a) connected to a reservoir of finite volume (b). Parameters shown: ΔV: volume sent to the outlet by rotor rotation; VM(γ): outlet chamber volume; VS: reservoir finite volume.
Grahic Jump Location
Fluid transportation (shaded region) from lower to higher pressure; this region is connected to the outlet when γ=γk
Grahic Jump Location
Volume of the outlet chamber, closed between the rotors and the case
Grahic Jump Location
Diagram of outlet pressure as function of rotation angle
Grahic Jump Location
Range of rotor rotation angle during which the valve is closed, as function of the compression ratio
Grahic Jump Location
Resultant components of forces as function of rotation angle
Grahic Jump Location
Frequency analysis of force resultant components
Grahic Jump Location
Resultant components of moments as function of rotation angle
Grahic Jump Location
Frequency analysis of moment resultant components
Grahic Jump Location
System isentropic efficiency as a function of compression ratio and outlet reservior volume



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In