Related Experiment Video
Updated: Apr 13, 2026
10:52
Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
Published on: April 13, 2016
9.3K
Discrete element method for emergency flow of pedestrian in S-type corridor
Journal of Nanoscience and Nanotechnology
|May 7, 2015
Summary
Modeling pedestrian flow in curved corridors is crucial for emergency evacuation safety. Increasing turning slope linearly increases evacuation time, with 90-degree turns posing significant risks due to dangerous points.
Area of Science:
- Civil Engineering
- Urban Planning
- Emergency Management
Background:
- Curved corridors are critical and potentially dangerous during emergency evacuations.
- Understanding pedestrian dynamics in these areas is essential for effective design and safety protocols.
Purpose of the Study:
- To analyze pedestrian flow in curved corridors using the Discrete Element Method (DEM).
- To investigate the impact of psychological effects on pedestrian behavior during evacuation.
- To identify and mitigate risks associated with different turning slopes, particularly 90-degree turns.
Main Methods:
- Utilizing the Discrete Element Method (DEM) to simulate pedestrian movement.
- Incorporating psychological factors into the simulation model.
- Analyzing evacuation times and identifying dangerous points in various curved corridor configurations.
Main Results:
- Evacuation time increases linearly with the turning slope of the corridor.
- A 90-degree turning slope presents a high risk due to three identified dangerous points.
- Pedestrian congestion in curved sections is a key factor contributing to danger.
Conclusions:
- The design of curved corridors must consider pedestrian flow dynamics to ensure safety.
- Mitigation strategies, such as dispersing pedestrian gatherings in curved sections, are necessary.
- Further research into psychological effects can enhance evacuation modeling accuracy.
Related Concept Videos
01:24Laminar Flow: Problem Solving
615
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
615
01:11Design Example: Forces in Sluice Gate
3.8K
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
Key variables in...
3.8K
01:18Uniform Depth Channel Flow: Problem Solving
693
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
693
01:30Bernoulli's Equation for Flow Along a Streamline
1.7K
Bernoulli's equation relates the energy conservation in a fluid moving along a streamline. The equation applies to incompressible and inviscid fluids under steady flow. For such a flow, Newton's second law is applied to a small fluid element, which experiences forces due to pressure differences, gravity, and velocity variations. The force balance leads to the following form of Bernoulli's equation:
1.7K
01:24Fast Decoupled and DC Powerflow
858
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
858
01:09Turbulent Flow: Problem Solving
617
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
617