"The CFD software from Fluent has enabled us to analyze successfully and with a great precision, the complex thermal and aerodynamic issues that arose during the continued development of our BR700 aircraft engine within the existing constraints of cost and time.”

"EMBRAER engineers saved a considerable amount of money and time by using a computational fluid dynamics (CFD) simulation to prove that flow characteristics of the new ERJ135 commuter jet are very similar to the already-certified ERJ-145. This application provides a clear example of how recent advances in unstructured CFD software makes this technology practical for a wide range of external aerodynamics applications.”

"Fluent Italia’s consulting team led Aermacchi to the edge of technology for our nacelle Ice Gas Exhaust system design. The overwhelmingly positive results convinced us to purchase the code for future developments both in nacelle and trainer aircraft design.”

"I have been using FLUENT for quite a few years. One feature I used a lot is the dynamic mesh capability, which is needed for simulating fluid flows where the computational domain is changing due to moving or deforming boundaries. The problems I have worked on using dynamic mesh include the propellant surface regression due to propellant burning in solid rocket motors, the closing and opening of a valve, the traveling of a projectile, etc. Another major application of the dynamic mesh capability in the field of rocket motor propulsion is the simulation of missile staging events, where the lower stage motor is separated from the upper stage motor due to the increasing pressure in the interstage. I have compared the FLUENT predictions (separation distance between the motors, the interstage pressure history, etc.) with the measured data from test flights and they agree well. We have a great deal of confidence in the predictions from FLUENT."

"The FLUENT code was initially employed at Embraer for the calculation of the engine-airframe integration. A lot of effort was put forth in the early days to validate the code by comparing CFD calculations with available experimental data. In more recent developments, CFD was used extensively and an increasing number of engineers began using FLUENT as our investment in computing power and tools grew. Currently, Embraer uses the code for a broad range of applications. FLUENT CFD helps us save time and money by reducing testing and improving the overall performance of aircraft configurations."

"We analyzed the HFK-I1 missile with planar wings using FLUENT CFD software. The results were then compared to experimental data obtained in a wind tunnel. We found strong to very strong correlation with experimental coefficients of normal force and of pitching moment. In the case of drag coefficient, correlation was excellent."

"The FLUENT modeling environment allows us to properly exploit our rocketry expertise. We are now able to offer solutions to a wider variety of specialist problems without the need for extensive software development. We aim to provide the high quality solutions people want, when they want them."

"We are extremely satisfied with FLUENT's stability and performance on our new 150 CPU Linux cluster. Over the three years Volvo Aero has been using Linux clusters, Fluent has consistently met and exceeded all our expectations. By switching to running FLUENT on our Linux clusters, we have been able to increase our computational resources by a factor of 10."

"ATK Thiokol Propulsion engineers have successfully used FLUENT in a variety of analyses that support safe and reliable design and operation of the ATK family of solid propellant rocket motors. Ranging from the small-scale study of gas flow in joint gaps with widths that are a fraction of an inch, to the analysis of internal motor flow fields with scales on the order of several feet, FLUENT offers a proven and reliable method for characterizing flow environments and providing heat transfer and structural load boundary conditions for component designers."

"We found that Fluent can provide the wide variety of powerful CFD modeling tools that we require to stay ahead of the competition. Their technical support is, by far, the best we have experienced since we started using virtual flow modeling as part of our analysis process."

"The complex details of modern day engineering designs can no longer be fully captured by traditional empirical correlations. FLUENT has shown that it can accurately model these complex geometries and give reliable results in a reasonable time. In fact, empirical correlations that were once the backbone of designing gas turbine engines are now being replaced by FLUENT alaysis."

"We have been using FLUENT CFD software since 1995 to resolve a range of aerodynamic design issues. Recently, we have used FLUENT to model a pitching aerofoil in 2D unsteady compressible viscous flow and to evaluate 3D rotor blades at high tip Mach number. CFD has proved to be a valuable design tool because of its capability to highlight the main flow features at an early stage in the design process. FLUENT offers the versatility we need to tackle complex problems."

"Fluent's CFD software has given us the ability to quickly predict the behavior of several design proposals that previously could not be modeled. We are also able to reduce our test time and expense by eliminating designs that do not perform as intended."

"This [auxiliary power unit (APU)] inlet was a big design challenge for us, with so many parameters that could vary and the performance requirements being so critical. It would have been very difficult to do without a powerful CFD tool. Even if we had come up with a design that worked, we would not have been able to optimize it the way we did. It is enormously expensive to change something such as the location of the inlet at that point. Any change we made to the inlet geometry would affect the entire tail section, requiring it all to be structurally analyzed again and possibly retooled. [Fluent's CFD software] tools such as virtual geometry and unstructured meshing were key in this application because they made the use of CFD possible."

"CFD lets us gain insight into what the flow is doing. We can see the interaction of recirculation regions and shock waves. These are things we weren't aware of before and they have improved our understanding of how the fins work.
With testing, we can get basic forces, but can't see how the forces interact with the fins. We know that at a certain angle of attack there are two big vortices coming off the back of the missile, but we also want to know how they interact with the fins. The only way to understand this interaction is to visualize the flow field with CFD.
Because of the scales of an analysis mesh vary greatly between the missile and the grid fins, manually creating the grid could take a prohibitive amount of time. Because of the automated tools in Fluent's preprocessor, GAMBIT, it was possible to carry out this task for the complex geometry with a minimum of effort.
With GAMBIT, a solid modeler, it was also possible to work from the top down. This method proved to be easier, especially for modeling the honeycomb frame. I modeled it the way it would be machined, subtracting cubes from a rectangular slab.
GAMBIT turned out to be very helpful here, not only because it supports unstructured meshes. It also has special tools that address difficult meshing situations.
We saw very good agreement with the measured data for all the configurations we investigated."