Thermal fluid modeling with physical network approach and using conduction and convection

Patent metadata

Field	Value
Publication number	US-9568258-B1
Application number	US-201213624392-A
Country	US
Kind code	B1
Filing date	Sep 21, 2012
Priority date	May 25, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A device receives information associated with a physical network, and creates a thermal fluid model, based on the information and with a technical computing environment (TCE), the thermal fluid model including at least a first block, a second block, and a node connecting the first block and the second block. The device calculates a first convection power flux for the first block and a second convection power flux for the second block, and calculates a first conduction power flux for the first block and a second conduction power flux for the second block. The device adds the first convection power flux and the first conduction power flux to determine a first power flux, and adds the second convection power flux and the second conduction power flux to determine a second power flux. The device outputs the first power flux and the second power flux.

First claim

What is claimed is:

1. A method, comprising:
receiving information, associated with a physical network, for generating a thermal fluid model in a technical computing environment (TCE),
the receiving being performed by one or more devices, and
the thermal fluid model including at least a first block, a second block, and a node connecting the first block and the second block;
calculating a first convection power flux, along a first direction of a simulated mass flow, for the first block of the thermal fluid model and a second convection power flux, along the first direction of the simulated mass flow or a second direction opposite to the first direction, for the second block of the thermal fluid model,
the calculating the first convection power flux and the second convection power flux being performed by the one or more devices and based on the received information;
calculating a first conduction power flux, along the first direction or the second direction, or setting the first conduction power flux to be zero, for the first block of the thermal fluid model and a second conduction power flux, along the first direction or the second direction, or setting the first conduction power flux to be zero, for the second block of the thermal fluid model,
the calculating the first conduction power flux and the second conduction power flux being performed by the one or more devices and based on the received information;
combining the first convection power flux and the first conduction power flux to determine a first power flux for the first block,
the combining the first convection power flux and the first conduction power flux being performed by the one or more devices;
combining the second convection power flux and the second conduction power flux to determine a second power flux for the second block,
the combining the second convection power flux and the second conduction power flux being performed by the one or more devices; and
solving one or more portions of the thermal fluid model as a solvable singularity-free system using the first power flux and the second power flux,
the solving being performed by the one or more devices.

2. The method of claim 1 , where the information associated with the physical network includes one or more of:
information about control volumes of the physical network;
information about a volume of each of the control volumes;
information about a temperature of each of the control volumes; or
information about a pressure of each of the control volumes.

3. The method of claim 1 , where the first convection power flux and the second convection power flux include an energy flow carried by a fluid flow.

4. The method of claim 1 ,
where calculating the first convection power flux for the first block is based on an equation that includes:

Φ

I
→
N

convection

=

{

m
.

⁢

h
I

,

m
.

≤

0
⁢

⁢

kg
⁢

·

⁢

s

-
1

m
.

⁢

h
N

,

m
.

<

0
⁢

⁢

kg
⁢

·

⁢

s

-
1

}

,

and
where Φ I→N convection is the first convection power flux, {dot over (m)} is a mass flow associated with the thermal fluid model, h I is an enthalpy of the first block, and h N is an enthalpy of the node.

5. The method of claim 1 ,
where calculating the second convection power flux for the second block is based on an equation that includes:

Φ

II
→
N

convection

=

{

-

m
.

⁢

h
N

Assignees

• Mathworks Inc

Inventors

• Colas Dorian
• Wendlandt Jeffrey M

Classifications

• G06F2111/10

  Numerical modelling · CPC title

• G06F30/20 Primary

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• F28F13/00 Primary

  Arrangements for modifying heat-transfer, e.g. increasing, decreasing (F28F1/00 - F28F11/00 take precedence) · CPC title

• F28F2260/02

  having microchannels · CPC title