add file timescales_comparison.ipynb

examples/PySDM_examples/Bolin_1958/timescales_comparison.ipynb

@@ -0,0 +1,159 @@
+{
+ "cells": [
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": [
+    "[![preview notebook](https://img.shields.io/static/v1?label=render%20on&logo=github&color=87ce3e&message=GitHub)](https://github.com/open-atmos/PySDM/blob/main/examples/PySDM_examples/Bolin_1958/timescales_comparison.ipynb)\n",
+    "[![launch on mybinder.org](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/open-atmos/PySDM.git/main?urlpath=lab/tree/examples/PySDM_examples/Bolin_1958/timescales_comparison.ipynb)\n",
+    "[![launch on Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/open-atmos/PySDM/blob/main/examples/PySDM_examples/Bolin_1958/timescales_comparison.ipynb)"
+   ],
+   "id": "da62f9aa77468520"
+  },
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": [
+    "#### Timescales comparison \n",
+    "##### Bolin\n",
+    "##### Gedzelman"
+   ],
+   "id": "c7eb55d509c585e9"
+  },
+  {
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2025-01-08T11:43:17.155448Z",
+     "start_time": "2025-01-08T11:43:17.152024Z"
+    }
+   },
+   "cell_type": "code",
+   "source": [
+    "import sys\n",
+    "if 'google.colab' in sys.modules:\n",
+    "    !pip --quiet install open-atmos-jupyter-utils\n",
+    "    from open_atmos_jupyter_utils import pip_install_on_colab\n",
+    "    pip_install_on_colab('PySDM-examples')"
+   ],
+   "id": "f508348dd491651d",
+   "outputs": [],
+   "execution_count": 1
+  },
+  {
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2025-01-08T12:12:05.343374Z",
+     "start_time": "2025-01-08T12:12:05.338334Z"
+    }
+   },
+   "cell_type": "code",
+   "source": [
+    "import numpy as np\n",
+    "from PySDM.physics import si\n",
+    "from PySDM import Formulae"
+   ],
+   "id": "c680144e7ad3b94a",
+   "outputs": [],
+   "execution_count": 4
+  },
+  {
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2025-01-08T12:12:06.098091Z",
+     "start_time": "2025-01-08T12:12:06.044091Z"
+    }
+   },
+   "cell_type": "code",
+   "source": [
+    "formulae = Formulae(\n",
+    "    terminal_velocity='RogersYau',\n",
+    "    drop_growth='Mason1951',\n",
+    "    diffusion_thermics='Neglect',\n",
+    "    saturation_vapour_pressure='AugustRocheMagnus',\n",
+    "    ventilation='Froessling1938',\n",
+    "    particle_shape_and_density='LiquidSpheres',\n",
+    "    air_dynamic_viscosity='ZografosEtAl1987',\n",
+    "    constants={'BOLIN_ISOTOPE_TIMESCALE_COEFF_C1': 1.63},\n",
+    "    isotope_relaxation_timescale='Bolin1958',\n",
+    ")\n",
+    "const = formulae.constants"
+   ],
+   "id": "16ed280e5d36eb94",
+   "outputs": [],
+   "execution_count": 5
+  },
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": [
+    "TODO:\n",
+    "    - maybe use definitions from Bolin? As a .py file?"
+   ],
+   "id": "aa0405d30f2d6b2"
+  },
+  {
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2025-01-08T12:16:45.968461Z",
+     "start_time": "2025-01-08T12:16:45.035759Z"
+    }
+   },
+   "cell_type": "code",
+   "source": [
+    "a =  radii = np.asarray([0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.15, 0.20]) * si.cm\n",
+    "# from Bolin\n",
+    "temperature = const.T0 + 10 * si.K\n",
+    "pressure = const.p_STP\n",
+    "D = formulae.diffusion_thermics.D(T=temperature, p=pressure) #diffusion coefficient\n",
+    "f = 1. #set\n",
+    "rho_s = 1\n",
+    "S = b = 0"
+   ],
+   "id": "c71f0468385912c5",
+   "outputs": [],
+   "execution_count": 6
+  },
+  {
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2025-01-08T12:16:45.979506Z",
+     "start_time": "2025-01-08T12:16:45.977946Z"
+    }
+   },
+   "cell_type": "code",
+   "source": "tau = -4 * np.pi * a * D * f * rho_s * (S - 1)/(1 + b)",
+   "id": "66b599e2475f5b73",
+   "outputs": [],
+   "execution_count": 7
+  },
+  {
+   "metadata": {},
+   "cell_type": "code",
+   "outputs": [],
+   "execution_count": null,
+   "source": "",
+   "id": "53edb54ed337d98b"
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}