Wind tunnels are crucial tools for optimizing aerodynamics, air resistance, and other key performance metrics in vehicles and aircraft. Among these, aeroacoustics stand out as a significant factor, particularly as wind noise becomes predominant at medium speeds, directly affecting the comfort of passengers.
gfai tech’s Acoustic Camera revolutionizes the ability to pinpoint these noise sources with unparalleled precision. To meet the exacting demands of our clients, each measurement system is meticulously customized for its specific wind tunnel, ensuring the highest level of accuracy. This tailored approach not only enhances precision but also minimizes measurement and evaluation times.
Shanghai Automotive Wind Tunnel Center of Tongji University (Tongji-SAWTC) was the first automotive wind tunnel laboratory in China. It is well-known in the field around the world, and has been continuously served ground vehicle industry development for over 15 years since 2009.
In 2013, gfai tech provided Tongji University with an Acoustic Camera for their aeroacoustic research. Today, we are proud to be upgrading their system to a state-of-the-art 3D wind tunnel system, ensuring that their facilities remain at the cutting edge of technology.
Each wind tunnel presents unique challenges, from varying sizes and wind speeds to specific shear layer dynamics. At gfai tech, we recognize that a one-size-fits-all approach doesn't suffice. That’s why we customize every aspect of our Acoustic Camera systems, from the hardware to the software.
A key element of our systems is the microphone array, which is designed and optimized specifically for each project. Factors such as the size of the wind tunnel, the desired measurement distance, and the importance of different frequency ranges and dynamics are all considered. Our experts use proprietary algorithms to determine the optimal microphone distribution, ensuring the highest quality of data collection.
Our software is equally adaptable, integrating seamlessly with the wind tunnel's measurement system. This customization ensures that all necessary parameters, including wind speed, temperature, and turntable position, are incorporated, allowing for precise and efficient measurements.
The development of the wind tunnel system for Tongji University was a highly collaborative effort. Our team worked closely with the university to ensure that all requirements were met, leveraging our extensive experience in wind tunnel measurements and system customization.
Three microphone arrays were specifically developed for this project, designed to capture measurements from multiple angles—both sides and from above. Each array, consisting of 168 optimally distributed microphones, is engineered for easy attachment and removal from the wind tunnel, facilitating both setup and teardown.
A 3D scanner integrated into the wind tunnel further enhances the system's capabilities, automating the mapping process and ensuring accurate 3D acoustic measurements on 3D models of the tested objects (imported by the customer). The software was also tailored to allow for effortless data collection and quick access to results.
After finalizing the design, all components were sourced from trusted, local suppliers to maintain the highest quality standards. Our production team then assembled the system, from microphone arrays to data recorders, with meticulous attention to detail.
Once assembly was complete, the entire system underwent a preliminary calibration and full functional test at our Berlin facility, to ensure full functionality before shipment.
The completed Acoustic Camera System was securely packed in custom crates and transported to Shanghai, where our expert team will oversee its installation and calibration. On-site, the system will undergo final adjustments, and critical parameters, such as shear layer width, will be precisely determined and documented.
To ensure smooth operation, our team will conduct several test runs under various conditions, providing comprehensive training on both hardware and software to Tongji University’s personnel.
The system is en route to Shanghai and will be installed in the autumn. Stay tuned for updates as we bring this advanced acoustic wind tunnel online.
Advanced Technology for Future-Ready Testing:
gfai tech stays at the cutting edge with continuous R&D, providing systems equipped with the latest in acoustic measurement and post-processing, keeping you ahead in aeroacoustic testing.
Tailored, Research-Driven Solutions:
We go beyond standard offerings by customizing systems based on in-depth analysis and advanced algorithms, ensuring reliable, actionable data tailored to your unique requirements.
Expertise that Fits Your Workflow:
With decades of experience, gfai tech delivers tailored solutions that seamlessly integrate into your operations, enhancing efficiency and meeting your unique challenges.
Collaborative, Long-Term Value:
We see each project as a partnership, working closely with you from design to ongoing support, ensuring your system meets current needs and is scalable for the future.
Get in touch with us: Interested in our solutions? Contact us to find out more about our technologies and their benefits for your company.
