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Extending and Modifying LAMMPS Writing Your Own Source Code

You're reading from   Extending and Modifying LAMMPS Writing Your Own Source Code A pragmatic guide to extending LAMMPS as per custom simulation requirements

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Product type Paperback
Published in Feb 2021
Publisher Packt
ISBN-13 9781800562264
Length 394 pages
Edition 1st Edition
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Authors (2):
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Jichen Li Jichen Li
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Jichen Li
Dr. Shafat Mubin Dr. Shafat Mubin
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Dr. Shafat Mubin
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Getting Started with LAMMPS
2. Chapter 1: MD Theory and Simulation Practices FREE CHAPTER 3. Chapter 2: LAMMPS Syntax and Source Code Hierarchy 4. Section 2: Understanding the Source Code Structure
5. Chapter 3: Source Code Structure and Stages of Execution 6. Chapter 4: Accessing Information by Variables, Arrays, and Methods 7. Chapter 5: Understanding Pair Styles 8. Chapter 6: Understanding Computes 9. Chapter 7: Understanding Fixes 10. Chapter 8: Exploring Supporting Classes 11. Section 3: Modifying the Source Code
12. Chapter 9: Modifying Pair Potentials 13. Chapter 10: Modifying Force Applications 14. Chapter 11: Modifying Thermostats 15. Assessments 16. Other Books You May Enjoy Appendix A: Building LAMMPS with CMake 1. Appendix B: Debugging Programs 2. Appendix C: Getting Familiar with MPI 3. Appendix D: Compatibility with Version 29Oct20

Chapter 11: Modifying Thermostats

In this chapter, we will provide examples of writing custom fixes to modify the thermostat controlling the system temperature, along with an example of modifying Fix Print to aid in custom simulation designs. We will create new fixes that are able to thermostat the system by adjusting atom velocities and temperature increments per iteration.

We will cover the following topics in this chapter:

  • Writing a fix to apply the Andersen thermostat
  • Writing a fix to apply a non-linear temperature increment
  • Writing a fix to print the output at evaporation

By the end of this chapter, you will learn to modify the source code relating to the thermostatting of a system. It will enable you to design systems that require non-conventional thermostats or related features not available in a standard LAMMPS download.

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