Logging data from an Atmotube PRO over Bluetooth

python
air quality
atmotube

Having fun with data logging.

May 19, 2025
Allan Farrell

Mapping Pollen Dispersion

julia
dispersion modelling
pollen

Calculating how far the wind blows.

May 10, 2025
Allan Farrell

Vessel Blowdown - Real Gases

julia
compressible flow
blowdown
equations of state

Modelling vessel blowdowns using equations of state.

Mar 19, 2025
Allan Farrell

Vessel Blowdown - Ideal Gases

julia
compressible flow
blowdown

Evaluating approaches to ideal gas blowdowns.

Jan 24, 2025
Allan Farrell

Relief Valve Sizing with Real Gases

julia
pressure relief
compressible flow
equations of state

Compressible orifice flow calculations using equations of state.

Oct 28, 2024
Allan Farrell

Modelling Hydrogen Releases Using HyRAM+

python
hydrogen
dispersion modelling

Hydrogen plume modelling and indoor accumulation.

Sep 22, 2024
Allan Farrell

Plastics Recycling and Microplastics

plastic

Is plastic recycling a huge source of microplastics?

Jul 14, 2024
Allan Farrell

Engineering a Cup of Coffee Part Two: Espresso

julia
coffee
mass transfer

Modelling espresso bed extraction.

Mar 23, 2024
Allan Farrell

Estimating the impact of fugitive emissions

julia
hydrogen
compressible flow

Evaluating the zero emissions fuel.

Jan 3, 2024
Allan Farrell

Impossible bowling

python
bowling

Looking for impossible bowling games.

Nov 26, 2023
Allan Farrell

Messing around with model parameters

julia
dispersion modelling

The importance of choosing the right references.

Oct 30, 2023
Allan Farrell

Engineering a Cup of Coffee

julia
coffee
mass transfer

Better coffee through chemical engineering.

Sep 15, 2023
Allan Farrell

Monitoring smoke infiltration

julia
air quality
atmotube
building infiltration

Better indoor air quality through data.

May 22, 2023
Allan Farrell

Taking a second look at the Britter-McQuaid model

julia
dispersion modelling

Re-evaluating plume extents and determining the explosive mass

Mar 12, 2023
Allan Farrell

Integrating a Gaussian puff - mistakes were made

julia
dispersion modelling

Successive approximations to … an integrated gaussian puff model.

Jan 15, 2023
Allan Farrell

Dynamic Mode Decomposition

julia
dynamical systems

Dynamic mode decomposition of fluid flow problems.

Dec 18, 2022
Allan Farrell

Hydrogen Blending

julia
hydrogen
compressible flow

Blending hydrogen into natural gas.

Nov 10, 2022
Allan Farrell

Adiabatic Compressible Flow in a Pipe

julia
compressible flow

Evaluating different models of adiabatic pipe flow.

Sep 23, 2022
Allan Farrell

Between a puff and a plume

julia
dispersion modelling

An integrated Gaussian puff model

Jun 10, 2022
Allan Farrell

More on Turbulent Jets

julia
dispersion modelling
turbulent jets

Calculating concentrations, temperatures, and flow rates.

May 8, 2022
Allan Farrell

Turbulent Jets

julia
dispersion modelling
turbulent jets

Notes on turbulent jets and velocity profiles.

Apr 8, 2022
Allan Farrell

The 2021 Canadian Federal Election

julia
elections

An analysis of how exceptionally little changed.

Sep 22, 2021
Allan Farrell

Smoke Days

julia
air quality

Frequency of forest fire smoke events.

Jul 18, 2021
Allan Farrell

Building Infiltration Example – Chlorine Release

julia
dispersion modelling
building infiltration
hazard screening

Single zone building infiltration model with an instantaneous release

Jun 19, 2021
Allan Farrell

Building Infiltration Example

julia
air quality
building infiltration

Single zone building infiltration of forest fire smoke.

May 22, 2021
Allan Farrell

Turbulent Jet Example - Acetylene Leak

julia
chemical releases
hazard screening
dispersion modelling
turbulent jets

Estimating the explosive mass.

Apr 10, 2021
Allan Farrell

VCE Example - Butane Vapour Cloud

julia
chemical releases
hazard screening
dispersion modelling
explosions

Using the Baker-Strehlow-Tang model for a vapour cloud explosion.

Jan 9, 2021
Allan Farrell

Worst Case Meterological Conditions

julia
dispersion modelling

The worst case weather conditions for air dispersion modeling.

Dec 12, 2020
Allan Farrell

Air Dispersion Example - Gaussian Dispersion Model of Stack Emissions

julia
hazard screening
dispersion modelling

Estimating the airborne quantity.

Dec 5, 2020
Allan Farrell

Compressible Flow Example - Sizing a Goose Neck Vent

julia
compressible flow
pressure relief

Calculating the minimum diameter in incompressible, isothermal, and adiabatic flow situations.

Nov 28, 2020
Allan Farrell

Chemical Release Screening Example - Butane leak

julia
chemical releases
hazard screening

Estimating the airborne quantity.

Nov 20, 2020
Allan Farrell
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