Simulation Bulb Heating and Flow Pattern - Thermal Analysis

CAD model bulb heating groups, created in NOGRID's COMPASS

Figure 1: CAD created in NOGRID's COMPASS

Bulb heating case setup in NOGRID points CFD software's GUI

Figure 2: Setup the bulb heating case within the GUI

Bulb heating velocity and vector plot within NOGRID points CFD software's GUI

Figure 3: Result view of the bulb heating process in NOGRID points' GUI

Animation temperature bulb heating over time in NOGRID points CFD software

Figure 4: Temperature plot over time for the bulb heating case

If you want to perform a thermal analysis of bulb heating, including flow pattern, by using simulation the CFD simulation software NOGRID points is an excellent choice. Based on a geometric model - either imported from your CAD system or created with our CAD preprocessor COMPASS - you can generate a computational model of a specific geometry. Compared to mesh-based methods, this approach significantly reduces setup time and allows you to evaluate the thermal behavior in advance.

Heat can be transferred either through conduction and/or radiation or convection via fluid flow. All heat transfer mechanisms can also be coupled within the simulation. In the example below, the airflow inside a bulb is shown. The screw thread is modeled as a solid (metal), where heat is transferred solely by conduction. A heat source is applied at the tip of the heater, causing the temperature at that point to rise over time. Because the air density depends on the temperature, the air starts to move after a while.

For the heat transport within the air we used a P1 radiation model together with the solving of the usual energy balance (heat conduction and convection). This model is an example of using two different materials and computes the flow pattern in the air and the coupled temperature in both materials.

NOGRID points can perfectly be used for designing and problem solving of heat transfer cases. It allows for precise prediction of the temperature front as well as heating and cooling rates. NOGRID points helps to understand the flow by visualization of the mass, momentum, and heat transfer of single and multiple phases. You receive integral quantities which you can use to analyze the heat exchange efficiency.

Capabilities of NOGRID points CFD software

NOGRID combines capabilities to handle free surface flow and moving parts within the domain, allowing the simulation of any conceivable geometry and operating modes such as

computation is in full 3D solving complete Navier-Stokes-Equations
easy and intuitive setup for thermal analysis cases
free definable material properties by equations or curves
evaluation of chemical reactions and corresponding heat source terms
open or closed domains including inflow and outflow areas (non-batch mode)
moving of parts and flexible thermal contact behaviour

Whitepaper Nogrid points Technology

Nogrid's strengths

Particular strengths of NOGRID's fluid flow CFD software are the rapid preprocessing (no fluid grid needs to be generated, only the boundary mesh, inner finite points are generated automatically depending on User setting initially and during computation), and the outstandingly short computation time even for complicated cavities.

As you can see in the image below, the boundary of the geometry still requires a mesh to allow the interior finite points to detect the boundary. The boundary must therefore be meshed and the finite points inside are automatically generated during the simulation controlled by User specifications.

Easy and fast modelling: Build geometry, mesh boundary, setup the case and start computation

What is CFD from NOGRID?

CFD solves the fundamental equations that define the fluid flow process. With CFD software from NOGRID every engineer makes better decisions by predicting, analyzing and controlling fluid flow, heat and mass transfer or chemical reaction. By using NOGRID software for flow modeling you receive information on essential flow characteristics as for example flow distribution. Using it additional to testing and experimentation NOGRID software helps to improve the evaluation of your design – resulting in better construction and operation parameters, increasing planning security and money savings due to faster time to the marketplace for your product or process.

Choose NOGRID

With NOGRID, you choose professional CFD software and services – our aim is helping you to be successful. When you decide to work with NOGRID you choose close cooperation with a dynamic, flat hierarchies-organization. Short information channels result in quick and accurate professional support and service. Our team consists of highly qualified employees, who are experts in fields such as numerical simulation or computational fluid dynamics. Based on our know-how, we are pleased to offer the following services, responding to your individual requirements:

TRAINING

In our two-days training courses you will learn, how to use NOGRID CFD software efficiently. Our technical support team will teach you how to handle and solve different cases.

For more details please refer to Training Courses →

Technical Support

We offer full professional support from the minute you start using our software, by telephone or by email. Contact us, when ever needed.

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Service

Lack of time or resources and other constraints often make outsourcing an attractive solution. We help you with your flow modeling needs. Based on our engineering expertise in this field we offer individual numerical simulation services matching the unique needs of your organization.

For more details please refer to Simulation Services →