PipeFlowCalcAssistant is a comprehensive application designed for fluid mechanics and pipe flow calculations. The app provides three specialized calculators: a Turbulent Flow Calculator that determines friction factors and head loss using the Colebrook-White equation, a Pipe Flow Velocity Calculator that computes flow velocity based on flow rate and pipe diameter, and an Orifice Size Calculator that calculates orifice diameter from flow rate, coefficient, and pressure drop parameters. Each calculator features modern UI design with gradient backgrounds, animated results, unit conversion capabilities, and calculation history storage. The app serves as a practical tool for engineers, students, and professionals working with fluid dynamics, offering accurate calculations with intuitive interfaces and comprehensive parameter support for various engineering applications.