Established in 2002, the GREATWALL MIXERS Laboratory has brought together a team of core technical experts with strong theoretical foundations and extensive practical experience. Over the years, the laboratory’s research scope has expanded from its initial focus on power measurement to include flow field analysis, material characterization, and integrated skid-mounted experimental systems. In addition to standard laboratory instruments, the facility is equipped with advanced diagnostic equipment such as Particle Image Velocimetry (PIV), Brookfield viscometers, rheometers, and laser particle size analyzers to support specialized mixing research.
The laboratory operates both cold-model and hot-model platforms ranging from milliliter to cubic-meter scale, and provides a wide range of impeller types to support diversified mixing studies across various process conditions and material properties.
Computational Fluid Dynamics (CFD) is a vital tool in research and development. Its core principle lies in using numerical methods to solve the fundamental physical equations governing fluid flow, enabling precise simulation of complex phenomena such as fluid motion, heat transfer, and chemical reactions under specific conditions. CFD can replicate flow patterns within vessels and process setups without being limited by scale, allowing reliable prediction of the mixing performance of large tanks, including those with unique geometries or specific process requirements.
The GREATWALL MIXERS R&D team has extensively applied CFD across a wide range of process scenarios, from simple single-phase mixing to complex multiphase suspensions and dispersions. This approach not only addresses a variety of challenging technical problems for customers but also provides robust numerical simulation capabilities that underpin and accelerate product development.
GREATWALL MIXERS provides load and no-load testing services for mixers. All testing procedures are conducted in strict accordance with applicable standards to ensure objective, accurate analysis and reliable recommendations.
The 29,000‑gallon (~110 m³) test tank accommodates mixers with motor power up to 250 HP (200 kW), shaft lengths up to 17.2ft (5.4 m), and impeller diameters up to 16.4 ft (5 m). It supports simultaneous testing of up to four mixer units and is equipped with an underwater camera system for real‑time monitoring of current, voltage, noise, speed, and vibration.
The no-load test platform supports mixers with shaft lengths up to 45.9 ft (14 m) and impeller diameters up to 26.4 ft (8 m).
By performing both no-load and load tests prior to shipment, potential issues in design or manufacturing can be identified and resolved, ensuring the reliability of the delivered equipment.
In mixer selection and design, GREATWALL MIXERS has developed a comprehensive management and design software system through a combination of strategic procurement and in-house development. The company’s proprietary design software not only integrates a broad set of established engineering calculation formulas but also embeds the valuable design know-how accumulated over nearly three decades. These field-validated insights provide essential technical support and scientific guidance for the development of new mixer designs.