Download

Download Full Text (1.6 MB)

Description

This study addresses the challenge of achieving controlled low temperatures to investigate and provide information on the precise conditions that promote homogenous (≤-38oC) and heterogenous (≥ -38oC) atmospheric ice crystal formation and aggregation, which disrupt aerospace industries and military activity. I present a preliminary design of a novel temperature control setup for generating levitated ice crystal aggregates within a Dual Balance Electrodynamic Trap (DBET). This preliminary design is called the replica low temperature electrodynamic balance (R-LTDBET). The design integrates chilled-coolant-conveying copper tubes encircling the hollow-square-shaped DBET’s external wall to precisely control its inner chamber temperature while incorporating real-time temperature sensing, control, and data analysis as the levitated microdroplets are frozen and aggregated within the R-LTDBET. Currently capable of cooling the R-LTDBET’s inner chamber to -9.0oC, this setup will be impl emented on the actual LT-DBET design for further testing and to generate experimental data that can provide valuable insight to aerospace engineers and atmospheric scientists designing hypersonic vehicles and developing precise cloud models which are poorly constrained in global atmospheric models. Future works aim to achieve lower temperatures, which enhances experimental insights into ice crystal structure and sticking potential.

Publication Date

2-29-2024

Document Type

Poster

City

Grand Forks, ND

Keywords

Atmospheric science, Ice-nucleation, Ice-crystals, Electro-Dynamic balance

Disciplines

Atmospheric Sciences

Comments

Presented at the 2024 UND Graduate Research Achievement Day.

Low-Temperature Laboratory Instrumentation for Investigating Ice Crystal Aggregate Formation in the Atmosphere

Share

COinS