Technalysis®Engineering and Passage®
CFD Software
Since 1985, Technalysis, Inc. has been providing the latest
technology and practical solutions to solve the clients' problems,
within their schedule and budget. Technalysis specializes solving
complex fluid flow and heat transfer problems using computational
fluid dynamics (CFD) and other advance CAE solutions.
We have worked with many small and large engineering groups. These
include automotive, electrical, appliance, equipment, food,
chemicals, and pharmaceutical companies. Our consulting group
utilizes in-house developed, engineering design CFD software
called Passage;
also licensed as consumer software products. For a brief list of
companies that we have provided consulting and software solutions,
please refer to our
list of clients.
Coupling of Passage®/ DEM and FLOW
Software
Example: Fluidized Bed Granulation of Tablets
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Flow Model - Air Velocity |
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DEM Model Particles |
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contact Technalysis for licensing options and consulting
services. |
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Coupling of Passage®/
DEM and FLOW Software brochure (.pdf) |
Advantages of coupling Passage®: Discrete Element
Modeling (DEM) and CFD FLOW Software
By coupling PASSAGE®: DEM
and
FLOW software a variety of problems can be solved
which can not be treated by using either one model individually.
This capability allows modeling of liquids, gases, solid particles
and their mixtures for many industrial problems in both micro and
macro scales. It can be applied to process modeling of mixing,
wetting, coating, filtration, fermentation and filling operations
for applications in food, pharmaceutical, chemical, metals,
plastics, glass, ceramics, powders processing and emission control.
DEM and FLOW modules can be
coupled in a variety of ways depending on the application:
- Many mixtures or two-phase flows require modeling of
microscopic behavior of the material (e.g. air flow around solid
particles. In this case DEM and FLOW
modules are executed in parallel.
- Industrial applications of particle flows usually involve
billions of particles which cannot be efficiently modeled by
DEM models. On the other hand, flow codes can not
predict the material properties of mixtures or particle flows in
sufficient detail due to the lack of accurate material models.
In this case, DEM model is used to determine
material properties for the FLOW model.
Example: Mixing of Powders
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A. DEM Model
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Mixing of powders for
industrial applications, involves
calculation of the motion of large number of
particles.
DEM models can be used to
simulate applications with smaller number of
particles in the laboratory.
Limited number of particles
Input: Microscopic properties of material
Output: Motion of each particle |
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B. Simple Models
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DEM Model
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Flow Model
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Simple experiments can be designed which are
modeled by using both DEM
and
FLOW. Microscopic material
properties are used for the DEM
model. Macroscopic material properties are
then determined by comparing the DEM
and FLOW solutions for
simple cases.
Input: Microscopic material properties for
DEM model
Output: Macroscopic material properties for
FLOW model
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C. Flow Model
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After
determining the material properties for
particle flow, FLOW model
is used for solving industrial problems.
Billions of Particles
Input: Material Properties for FLOW
model
Output: Material Flow: for the application
with large number of particles
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Contact us for a
more detail discussion of Technalysis'
engineering capabilities. |
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