app.py

import gradio as gr
import time

# Reynolds Number Calculation Logic
def calculate_reynolds_number(velocity, diameter, density, viscosity, velocity_unit, diameter_unit, density_unit, viscosity_unit):
    # Unit conversions
    if velocity_unit == "cm/s":
        velocity_m = velocity / 100
    elif velocity_unit == "ft/s":
        velocity_m = velocity * 0.3048
    else:
        velocity_m = velocity

    if diameter_unit == "cm":
        diameter_m = diameter / 100
    elif diameter_unit == "mm":
        diameter_m = diameter / 1000
    elif diameter_unit == "ft":
        diameter_m = diameter * 0.3048
    else:
        diameter_m = diameter

    if density_unit == "g/cm³":
        density_kgm3 = density * 1000
    else:
        density_kgm3 = density

    if viscosity_unit == "cP":
        viscosity_pas = viscosity / 1000
    else:
        viscosity_pas = viscosity

    try:
        reynolds_number = (velocity_m * diameter_m * density_kgm3) / viscosity_pas
        if reynolds_number < 2300:
            flow_type = "Laminar Flow"
        elif 2300 <= reynolds_number <= 4000:
            flow_type = "Transitional Flow"
        else:
            flow_type = "Turbulent Flow"

        return f"Reynolds Number: {reynolds_number:.2f} ({flow_type})"
    except ZeroDivisionError:
        return "Error: Viscosity cannot be zero."

# Create a dynamic name simulation (scrolling effect)
def simulate_name():
    name_text = "Designed by Kamran Liaqat - 2k23-chE-05"  # Adding the new text
    spaces = " " * 10  # Padding before the name
    scrolling_name = spaces + name_text + spaces
    result = []
    
    for i in range(len(scrolling_name)):
        result.append(scrolling_name[i:] + scrolling_name[:i])  # Simulate scrolling effect by rotating the string
        time.sleep(0.1)  # Adjust speed of scrolling

    return result

# Centrifugal Pump Power Calculation Logic
def calculate_pump_power(flow_rate, head, efficiency, density, flow_rate_unit, head_unit, density_unit):
    if flow_rate_unit == "L/s":
        flow_rate_m3s = flow_rate / 1000
    elif flow_rate_unit == "gpm":
        flow_rate_m3s = flow_rate * 3.78541 / 60000
    else:
        flow_rate_m3s = flow_rate / 3600

    if head_unit == "ft":
        head_m = head * 0.3048
    else:
        head_m = head

    if density_unit == "g/cm³":
        density_kgm3 = density * 1000
    else:
        density_kgm3 = density

    try:
        g = 9.81
        efficiency_decimal = efficiency / 100
        hydraulic_power = density_kgm3 * g * flow_rate_m3s * head_m
        shaft_power = hydraulic_power / efficiency_decimal
        return f"Hydraulic Power: {hydraulic_power / 1000:.2f} kW, Shaft Power: {shaft_power / 1000:.2f} kW"
    except ZeroDivisionError:
        return "Error: Efficiency cannot be zero."

# Orifice Meter Calculation Logic
def calculate_orifice_meter(diameter_pipe, diameter_orifice, flow_rate, pressure_drop, diameter_unit, flow_rate_unit, pressure_unit):
    if diameter_unit == "cm":
        diameter_pipe_m = diameter_pipe / 100
        diameter_orifice_m = diameter_orifice / 100
    elif diameter_unit == "mm":
        diameter_pipe_m = diameter_pipe / 1000
        diameter_orifice_m = diameter_orifice / 1000
    else:
        diameter_pipe_m = diameter_pipe
        diameter_orifice_m = diameter_orifice

    if flow_rate_unit == "L/s":
        flow_rate_m3s = flow_rate / 1000
    elif flow_rate_unit == "gpm":
        flow_rate_m3s = flow_rate * 3.78541 / 60000
    else:
        flow_rate_m3s = flow_rate

    if pressure_unit == "bar":
        pressure_pa = pressure_drop * 1e5
    elif pressure_unit == "psi":
        pressure_pa = pressure_drop * 6894.76
    else:
        pressure_pa = pressure_drop

    try:
        beta = diameter_orifice_m / diameter_pipe_m
        discharge_coefficient = 0.61
        area_orifice = 3.14159 * (diameter_orifice_m / 2) ** 2
        flow_rate_calculated = (
            discharge_coefficient
            * area_orifice
            * (2 * pressure_pa / 1000) ** 0.5
        )

        flow_rate_cgs = flow_rate_calculated * 1000000
        flow_rate_imperial = flow_rate_calculated * 2118.88

        return (
            f"Flow Rate (SI): {flow_rate_calculated:.4f} m³/s, "
            f"Flow Rate (CGS): {flow_rate_cgs:.2f} cm³/s, "
            f"Flow Rate (Imperial): {flow_rate_imperial:.2f} gpm"
        )
    except ZeroDivisionError:
        return "Error: Diameter or pressure drop cannot be zero."

# Sedimentation Tank Calculation Logic
def calculate_sedimentation_tank(flow_rate, length, width, depth, flow_rate_unit, length_unit, width_unit, depth_unit):
    if flow_rate_unit == "L/s":
        flow_rate_m3s = flow_rate / 1000
    elif flow_rate_unit == "m³/h":
        flow_rate_m3s = flow_rate / 3600
    else:
        flow_rate_m3s = flow_rate

    if length_unit == "cm":
        length_m = length / 100
    elif length_unit == "mm":
        length_m = length / 1000
    else:
        length_m = length

    if width_unit == "cm":
        width_m = width / 100
    elif width_unit == "mm":
        width_m = width / 1000
    else:
        width_m = width

    if depth_unit == "cm":
        depth_m = depth / 100
    elif depth_unit == "mm":
        depth_m = depth / 1000
    else:
        depth_m = depth

    try:
        tank_volume = length_m * width_m * depth_m
        detention_time = tank_volume / flow_rate_m3s
        return f"Tank Volume: {tank_volume:.2f} m³, Detention Time: {detention_time:.2f} seconds"
    except ZeroDivisionError:
        return "Error: Flow rate cannot be zero."

# Bernoulli's Equation Calculation Logic
def calculate_bernoulli(p1, p2, v1, v2, h1, h2, p_unit, v_unit, h_unit):
    # Unit conversions
    if p_unit == "Pa":
        p1_pa = p1
        p2_pa = p2
    elif p_unit == "bar":
        p1_pa = p1 * 1e5
        p2_pa = p2 * 1e5
    elif p_unit == "psi":
        p1_pa = p1 * 6894.76
        p2_pa = p2 * 6894.76
    else:
        p1_pa = p1
        p2_pa = p2

    if v_unit == "m/s":
        v1_mps = v1
        v2_mps = v2
    elif v_unit == "cm/s":
        v1_mps = v1 / 100
        v2_mps = v2 / 100
    elif v_unit == "ft/s":
        v1_mps = v1 * 0.3048
        v2_mps = v2 * 0.3048
    else:
        v1_mps = v1
        v2_mps = v2

    if h_unit == "m":
        h1_m = h1
        h2_m = h2
    elif h_unit == "cm":
        h1_m = h1 / 100
        h2_m = h2 / 100
    elif h_unit == "ft":
        h1_m = h1 * 0.3048
        h2_m = h2 * 0.3048
    else:
        h1_m = h1
        h2_m = h2

    try:
        # Bernoulli's equation: p1 + 0.5 * rho * v1^2 + rho * g * h1 = p2 + 0.5 * rho * v2^2 + rho * g * h2
        g = 9.81  # gravity in m/s²
        rho = 1000  # density of water in kg/m³
        # Calculate the change in pressure based on Bernoulli's equation
        delta_p = (0.5 * rho * (v2_mps**2 - v1_mps**2)) + (rho * g * (h2_m - h1_m)) + (p1_pa - p2_pa)
        return f"Pressure Difference (ΔP): {delta_p:.2f} Pa"
    except ZeroDivisionError:
        return "Error: Zero value input encountered."

# Gradio Interface
with gr.Blocks() as demo:
    # Custom CSS for background color
    gr.HTML("""
    <style>
        body {
            background-color: #76c7c0; /* Reddish-green color */
        }
    </style>
    """)

    # Name Template Section with Scrolling Effect
    gr.Markdown("# Designed by Kamran Liaqat - 2k23-chE-05")

    # Start a simulation for scrolling name
    name_simulation = simulate_name()
    scrolling_text = gr.Textbox(value="", label="Scrolling Name", interactive=False)
    
    def update_scrolling_text():
        for name in name_simulation:
            scrolling_text.update(value=name)
            time.sleep(0.1)

    # Supervised by Hidaytullah Mahar in Small Font beneath scrolling name
    gr.Markdown("<div style='font-size: small; color: #333;'>Supervised by Hidaytullah Mahar</div>")

    # Start the simulation when the interface is launched
    demo.load(update_scrolling_text)

    # Tabbed Interface for Calculators
    with gr.Tabs():
        with gr.Tab("1. Reynolds Number Calculator"):
            gr.Markdown("# Reynolds Number Calculator")
            with gr.Row():
                velocity = gr.Number(label="Fluid Velocity", value=1.0)
                velocity_unit = gr.Dropdown(["m/s", "cm/s", "ft/s"], label="Velocity Unit", value="m/s")
            with gr.Row():
                diameter = gr.Number(label="Hydraulic Diameter", value=0.1)
                diameter_unit = gr.Dropdown(["m", "cm", "mm", "ft"], label="Diameter Unit", value="m")
            with gr.Row():
                density = gr.Number(label="Fluid Density", value=1000.0)
                density_unit = gr.Dropdown(["kg/m³", "g/cm³"], label="Density Unit", value="kg/m³")
            with gr.Row():
                viscosity = gr.Number(label="Dynamic Viscosity", value=0.001)
                viscosity_unit = gr.Dropdown(["Pa·s", "cP"], label="Viscosity Unit", value="Pa·s")
            reynolds_button = gr.Button("Calculate Reynolds Number")
            reynolds_result = gr.Textbox(label="Reynolds Number Result")
            reynolds_button.click(
                calculate_reynolds_number,
                inputs=[velocity, diameter, density, viscosity, velocity_unit, diameter_unit, density_unit, viscosity_unit],
                outputs=reynolds_result,
            )

        with gr.Tab("2. Centrifugal Pump Power Calculator"):
            gr.Markdown("# Centrifugal Pump Power Calculator")
            with gr.Row():
                flow_rate = gr.Number(label="Flow Rate", value=10.0)
                flow_rate_unit = gr.Dropdown(["m³/h", "L/s", "gpm"], label="Flow Rate Unit", value="m³/h")
            with gr.Row():
                head = gr.Number(label="Head", value=20.0)
                head_unit = gr.Dropdown(["m", "ft"], label="Head Unit", value="m")
            with gr.Row():
                efficiency = gr.Number(label="Efficiency (%)", value=75.0)
                density = gr.Number(label="Fluid Density", value=1000.0)
                density_unit = gr.Dropdown(["kg/m³", "g/cm³"], label="Density Unit", value="kg/m³")
            pump_button = gr.Button("Calculate Pump Power")
            pump_result = gr.Textbox(label="Pump Power Result")
            pump_button.click(
                calculate_pump_power,
                inputs=[flow_rate, head, efficiency, density, flow_rate_unit, head_unit, density_unit],
                outputs=pump_result,
            )

        with gr.Tab("3. Orifice Meter Flow Calculator"):
            gr.Markdown("# Orifice Meter Flow Calculator")
            with gr.Row():
                diameter_pipe = gr.Number(label="Pipe Diameter", value=0.1)
                diameter_orifice = gr.Number(label="Orifice Diameter", value=0.05)
                diameter_unit = gr.Dropdown(["m", "cm", "mm"], label="Diameter Unit", value="m")
            with gr.Row():
                flow_rate = gr.Number(label="Flow Rate", value=10.0)
                flow_rate_unit = gr.Dropdown(["m³/s", "L/s", "gpm"], label="Flow Rate Unit", value="m³/s")
            with gr.Row():
                pressure_drop = gr.Number(label="Pressure Drop", value=10.0)
                pressure_unit = gr.Dropdown(["Pa", "bar", "psi"], label="Pressure Unit", value="Pa")
            orifice_button = gr.Button("Calculate Orifice Flow Rate")
            orifice_result = gr.Textbox(label="Orifice Flow Rate Result")
            orifice_button.click(
                calculate_orifice_meter,
                inputs=[diameter_pipe, diameter_orifice, flow_rate, pressure_drop, diameter_unit, flow_rate_unit, pressure_unit],
                outputs=orifice_result,
            )

        with gr.Tab("4. Sedimentation Tank Calculator"):
            gr.Markdown("# Sedimentation Tank Calculator")
            with gr.Row():
                flow_rate = gr.Number(label="Flow Rate", value=5.0)
                flow_rate_unit = gr.Dropdown(["L/s", "m³/h"], label="Flow Rate Unit", value="L/s")
            with gr.Row():
                length = gr.Number(label="Length", value=5.0)
                width = gr.Number(label="Width", value=2.0)
                depth = gr.Number(label="Depth", value=3.0)
                length_unit = gr.Dropdown(["m", "cm", "mm"], label="Length Unit", value="m")
                width_unit = gr.Dropdown(["m", "cm", "mm"], label="Width Unit", value="m")
                depth_unit = gr.Dropdown(["m", "cm", "mm"], label="Depth Unit", value="m")
            sedimentation_button = gr.Button("Calculate Sedimentation Tank")
            sedimentation_result = gr.Textbox(label="Sedimentation Tank Result")
            sedimentation_button.click(
                calculate_sedimentation_tank,
                inputs=[flow_rate, length, width, depth, flow_rate_unit, length_unit, width_unit, depth_unit],
                outputs=sedimentation_result,
            )

        with gr.Tab("5. Bernoulli's Equation Calculation"):
            gr.Markdown("# Bernoulli's Equation Calculation")
            with gr.Row():
                p1 = gr.Number(label="Pressure (P1)", value=101325.0)
                p2 = gr.Number(label="Pressure (P2)", value=90000.0)
                p_unit = gr.Dropdown(["Pa", "bar", "psi"], label="Pressure Unit", value="Pa")
            with gr.Row():
                v1 = gr.Number(label="Velocity (V1)", value=5.0)
                v2 = gr.Number(label="Velocity (V2)", value=4.0)
                v_unit = gr.Dropdown(["m/s", "cm/s", "ft/s"], label="Velocity Unit", value="m/s")
            with gr.Row():
                h1 = gr.Number(label="Height (H1)", value=10.0)
                h2 = gr.Number(label="Height (H2)", value=5.0)
                h_unit = gr.Dropdown(["m", "cm", "ft"], label="Height Unit", value="m")
            bernoulli_button = gr.Button("Calculate Pressure Difference")
            bernoulli_result = gr.Textbox(label="Bernoulli's Result")
            bernoulli_button.click(
                calculate_bernoulli,
                inputs=[p1, p2, v1, v2, h1, h2, p_unit, v_unit, h_unit],
                outputs=bernoulli_result,
            )

# Launch the interface
demo.launch()