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Project Description: Hello, I have a mini combustion chamber simulation in Ansys Fluent 2025 R2 (Student version). I have already completed: Geometry creation Meshing (quality is good, ready for solving) I am stuck in the Setup phase and need an expert to correct it so the results become physically realistic. What I did: Used Non-Premixed Combustion model (PDF approach) For the two inlets I imported mass-flow values: 0.0277 air 0.000177 fuel For walls I tried: Coupled walls Fixed temperature Different heat flux values The problem: The temperature keeps going unrealistically high (up to 4000 °C in many runs). residuals are bad The best result I managed to get was around 2000 °C, but even that is not correct for this chamber. What I need from you: Review and correct the inle...

I’m running a steady-state, two–phase condensation model for a single steam-carrying tube placed inside a rectangular duct through which the cooling medium flows. The goal is to quantify heat-transfer efficiency along the tube wall and map local condensation behaviour. All pre- and post-processing must be done in ANSYS Fluent – that is the environment my wider workflow depends on. I already have basic geometry and material data; what’s missing is a robust setup that captures phase change, solves for the temperature field on both sides of the tube, and outputs wall heat-flux, overall U-value, and condensate distribution with mesh-independent accuracy. Key points • Physics: two-phase (steam → liquid) condensation, steady-state, turbulent flow inside and ...

Climatic modelling of a closed vertical greenhouse (image is just as an example of the concept, the actual model is different) The job includes work in OpenStudio: - 3D modelling based on a 3D model that will be provided or import of an existing building (6 meter wide x 6 meter long x 6 meter high - open space with some technical equipment installed) The job includes work in EnergyPlus: - output from OpenStudio and definition of all parameters - modelling of the building and the industrial process of plant growth The job includes analytical reasoning of the results. Inputs will be provided for: - details of the insulation type to be used will be provided - a list of heat and humidity generators and expected output of heat and humidity for each - surface area of plants and water (for a sp...

Hi, I’m working on a colored flame candle development project and I’m looking for guidance from someone with chemistry experience. Objective:Create solid molded candles (not gel/container candles) that burn with bright visible flame colors such as red/magenta, green, and orange, ideally visible even in daylight. Key constraints for the project: Manufacturing must be simple and scalable. No complicated synthesis or multi-step laboratory reactions. Only cheap, easily available chemicals that can be sourced easily in the market. The candle should also support fragrance oils (scented candle). Avoid highly toxic compounds or chemicals that may create breathing hazards. Prefer materials that could realistically pass consumer product safety approvals. What I need help with:I...

Freelancer Brief – 3D Modeling Task We are developing a premium ergonomic cervical pillow made from molded memory foam. We need a parametric 3D CAD model suitable for industrial design and engineering simulation. Key requirements: • Dimensions: 600 x 350 mm pillow • Dual height: 95 mm and 120 mm • Central ergonomic cavity for the head • Cervical support ridge • Smooth ergonomic transitions • Manufacturing-ready geometry for foam molding Deliverables: • Parametric CAD model • STEP file • Native CAD file • 3 render views (top, perspective, section) The design should look premium and ergonomic similar to products from Tempur, Emma, or Cushion Lab, but must be original.

I need a design review for an electric heater with fan and heating element due to field failures. The specific issues are overheating and electrical shorts. Key Focus Areas: - Electrical Circuitry: Review and identify design flaws - Overheating: Analyze potential causes - Electrical Shorts: Investigate and recommend fixes Ideal Skills and Experience: - Expertise in electrical engineering - Experience with heating appliances design - Problem-solving skills for safety issues