Systems and techniques that facilitate overlaying and integrating computer aided design drawings with fluid models are presented. For example, as compared to conventional analysis of a fluid system that involves human interpretation of two-dimensional (2D) data and/or human trial and error with respect to a fluid system, the subject innovations provide for a three-dimensional (3D) design environment that can be generated by integrating computer aided design drawings with fluid models. In an aspect, physics modeling data associated with a degree of fluid flow can be rendered on a 3D model of a device by integrating computer aided design drawings with fluid models. In one example, visual characteristics of the physics modeling data can be dynamic based on the degree of fluid flow. Various systems and techniques disclosed herein can be related to cloud-based services, a heating, ventilation and air conditioning (HVAC) system, a medical system, an automobile, an aircraft, a water craft, a water filtration system, a cooling system, pumps, engines, diagnostics, prognostics, optimized machine design factoring in cost of materials in real-time, explicit and/or implicit training of models through real-time aggregation of data, etc. In an embodiment, a graphical user interface can provide a platform for interdisciplinary fluid modeling. For instance, a graphical user interface can allow for importing computer aided design (CAD) drawings and overlaying (e.g., integrating) CAD data with physics models (e.g., fluid computational models, thermal computational models, combustion computational models, etc.). Another implementation provides for an ability to trace an image and/or a CAD drawing via the graphical user interface to create a computational geometry that can be employed to construct a control volume for a multiple fluid model tool can be employed to identify correlations associated with a model including previously unknown correlations for the model and/or interdependencies of components of the model. In one example, a 3D model and/or a computational domain can be generated from an image. In another example, a 3D model and/or a computational domain can be generated from a traced image. As such, a 3D model associated with physics modeling can be generated more efficiently and/or data provided by a 3D model associated with physics modeling can be more accurate. Moreover, damage to a device, machine and/or component associated with a 3D model can be minimized by replacing human trial and error for analyzing one or more characteristics associated with the 3D model of the device, machine and/or component.