High speed Schlieren photography on small insects
Abstract
The high-speed Schlieren photography has been successfully implemented in studying large flying insects like Hawkmoth Manduca, showing some promising capabilities of capturing complex three-dimensional flow structures on flying insects. To further extend our study to a wider range of insect species, like fruit fly particularly, new approach of introducing density gradient is introduced in this work for studying the flow on small insects. A preset temperature gradient is achieved inside a clear acrylic container from using a constant high temperature iron plate at the top to elevate the air temperature evenly from the top to bottom. Then an electric magnetic tethered fruit fly is carefully introduced into the container using a pole. The fruit fly is de-tethered to set for free fly afterward and flying fruit fly disturbs the evenly distributed temperature/density gradient ambient that later can be visualized by a two-mirror parallel light high-speed Schlieren photography system.
- Publication:
-
APS Division of Fluid Dynamics Meeting Abstracts
- Pub Date:
- November 2019
- Bibcode:
- 2019APS..DFDL27006G