Abstract View
A Laminar Gas Inlet for High-speed Aircraft Sampling
DA YANG, Suresh Dhaniyala, Rainer Volkamer, Roy Lee III Mauldin, Clarkson University
Abstract Number: 565
Working Group: Instrumentation and Methods
Abstract
Aircraft sampling of aerosol and gas samples is complicated by the interaction of samples with inlet walls. The impact of wall-contact on gas-sampling is well recognized but poorly quantified. Here, we study an inlet designed to operate on the NCAR GV aircraft to sample gas phase constituents at high accuracy under laminar flow condition. We evaluate the connections between inlet geometry parameters and operating conditions to turbulence in the sample flow and establish ideal design parameters and flow conditions for wall-contact free sampling. We use computational fluid dynamics (CFD) modeling to simulate flow in and around the inlet and integrate these simulations with gas-phase diffusion modeling for this study. The modeling predictions will be compared with high-speed wind-tunnel measurements that are being planned for summer.