TAMU Technology
Licensing Office and the Turbomachinery Laboratory license the computational
programs developed at the Tribology Group. The programs predict the static and dynamic
force performance for the following fluid film bearings and seal types:
HydroJET© hydrostatic/hydrodynamic
radial bearings and annular seals, +
tilting and flexure pivot journal bearings, foil bearings, + angled injection
hydrostatic bearings
Hydrothrust© hydrostatic/hydrodynamic
thrust bearings and inner pressurized face seals.
Hydrotran© + transient analysis for blade loss and g-load simulations
(radial bearings)
Hseal2p© two-phase
flow cryogenic fluid annular seals.
The programs running on PCs include full fluid inertia, turbulence
flow and thermo hydrodynamic models for high-speed, high-pressure, hot/cold
cryogenic and process fluid operating conditions. The computational programs
have been validated with extensive experimental measurements performed at TAMU
and elsewhere. The Fortran F90 codes are extremely fast and user friendly.
Since 1990 Dr. Luis San Andrés has developed a number of
computational programs for the Turbomachinery Research Consortium (TRC). The
programs are integrated into the XLtrc© rotordynamics analysis suite
of programs developed exclusively for TRC members. XLtrc© performs
complete rotordynamic analysis (stability and imbalance response) of rotors
supported in fluid film bearing elements, seals, ball bearings, etc. Dr. San
Andrés codes predict the steady state rotor eccentricity and rotordynamic force
coefficients as a function of the operating conditions (rotational speed and
load) for the following types of bearing and seal configurations:
XLlanseal© annular pressure
seals (laminar and turbulent flow, variable fluid properties),
XLhydpad© laminar flow
hydrostatic/hydrodynamic radial bearings of arbitrary geometry,
XLlsfd© laminar flow squeeze
film dampers with end seals, circular centered orbits,
XLlubgt© floating ring
multiple-groove seals (laminar flow and thermal effects),
XLosfd© laminar
flow open end squeeze film dampers, arbitrary static eccentricity,
XLpresdm© laminar flow
pressure dam and multiple-lobe journal bearings,
XLsfdfem© laminar flow
open/sealed squeeze film dampers with fluid inertia effects,
XLtfpbrg© tilting pad
journal bearings and fixed arc bearings, laminar and turbulent flows, includes
a number of thermal models.
In
addition, Dr. San Andrés and students have developed the following
computational programs for the TRC and other sponsors
Hseal© gas
& liquid annular seals, including honeycomb seals
Dseal© gas
labyrinth and gas pocket damper seals
JBfish© herringbone
grooved journal bearings and spirally grooved seals (laminar flow).
Spiral©, Spiralc© flat & spirally grooved face (non contacting) seals, incompressible
fluid and ideal (buffer) gases
2Dhydro_GB© hydrodynamic/hydrostatic
gas rigid bearings
2DTiltpad_HGB© hydrodynamic/hydrostatic
rigid and tilting pad gas bearings
2D_FOIL_GB hydrodynamic gas foil bearings
List of Hydrocodes
users from government, industry and academia:
|
Hydrosealt |
|
date |
|
NASA Lewis RC |
Space Propulsion
Technology |
02/94 |
|
NASA Marshall
SFC |
Tribology
Research |
04/94 |
|
NASA Marshall
SFC |
CFD Research |
04/94 |
|
Edwards Air
Force Base |
Phillips
Laboratory |
09/94 |
|
Pratt &
Whitney |
P&W
Government Engines |
09/94 |
|
Rockwell, Inc. |
Rocketdyne |
09/94 |
|
Hydroflext,
Hydrotran |
|
|
|
NASA Lewis RC |
Space Propulsion
Technology |
01/95 |
|
Edwards Air
Force Base |
Phillips
Laboratory |
02/95 |
|
NASA Marshall
SFC |
Tribology
Research |
03/95 |
|
Pratt &
Whitney |
P&W
Government Engines |
04/95 |
|
Rockwell, Inc. |
Rocketdyne |
06/95 |
|
|
(Mechanical |
11/96 |
|
MIT |
Mechanical |
11/95 |
|
|
|
10/97 |
|
SNECMA, France |
Division SEP |
04/98 |
|
Hydrojet |
|
|
|
NASA Lewis RC |
Space Propulsion
Technology |
01/96 |
|
NASA Marshall
SFC |
Tribology
Research |
03/96 |
|
Rockwell |
Rocketdyne |
08/96 |
|
Pratt &
Whitney |
P&W
Government Engines |
10/96 |
|
SNECMA, France |
Division SEP |
04/98 |
|
Argo-Tech
Corporation Grundfos Tech |
|
08/98 12/99 |
|
Concepts ETI |
|
05/00 |
|
Advanced
Turbomachinery Solutions |
|
08/00 |
|
Exxon-Mobil
R&D |
John Fulton |
09/01 |
|
Hseal2p |
|
|
|
NASA Lewis RC |
Space Propulsion Technology |
01/97 |
|
Boeing |
Rocketdyne |
04/99 |
|
SNECMA, France |
SEP |
03/06 |
Hydrothrust
|
|
|
|
NASA Marshall SFC
Edwards Air
Force Base Pratt &
Whitney Argo-Tech
Corporation SNECMA, France |
Tribology
Research Branch Phillips
Laboratory P&W
Government Engines Division SEP |
10/98 10/98 10/98 09/99 12/99 |
|
|
|
|
|
XLHydrojet |
Code + Graphical Interface |
|
|
NASA Marshall
SFC |
Tribology
Research |
12/02 |
|
Exxon – Mobil RC |
John Fulton |
02/03 |
|
Boeing _
Rocketdyne |
John Keba |
06/03 |
|
Qualiseal |
Roberto Viloria |
06/03 |
|
Ødegaard & Danneskiold-Samsøe A/S |
Klaus Myllerup |
03/03 |
|
Massachusetts Institute of Technology |
Zoltan Spakosvky
– Gas Turbine Laboratory |
05/03 |
|
Dynatech Engineering – USAF SBIR Phase I |
Lyn Greenhill |
11/03 |
|
Barber Nichols |
Tim Miller |
12/03 |
|
|
|
|
|
|
|
|
|
XLHydrothrust |
Code + Graphical Interface |
|
|
Barber Nichols |
Tim Miller |
01/05 |
|
|
SEP |
12/05 |
|
Honweywell |
TLV |
10/05 |
2DTiltpad_HGB© hydrodynamic/hydrostatic
rigid and tilting pad gas bearings
|
2DTiltPad_HJB |
Code + Graphical Interface |
|
|
Barber Nichols |
Tim Miller |
06/06 |
|
GE RC |
Bugra Ertas |
06/06 |
|
Southwest Research Institute |
Jeff Moore |
06/05 |
|
Dresser Rand Co. |
Oscar de
Santiago |
06/05 |
|
|
John Ziegert |
06/05 |
2D & 1D_ GASFOIL BEARING© gas foil bearings – bump type
|
2DTiltPad_HJB |
Code + Graphical Interface |
|
|
Barber Nichols |
Tim Miller |
06/06 |
|
GE RC |
Bugra Ertas |
06/06 |
|
Southwest Research Institute |
Jeff Moore |
06/06 |
|
Dresser Rand Co. |
Oscar de
Santiago |
06/06 |
Last update – December 2006